Year of Publication: 2017, Vol. 69 (2)

Date Published 20 November 2017
M.A. Niissalo & J. Leong-Škorničková
Hanguana podzolicola (Hanguanaceae), a new record for Singapore [Page 157 - 165]
Hanguana podzolicola (Hanguanaceae) is newly recorded for Singapore. Detailed colour plates are given alongside the main characters for distinguishing this species from the two most similar species in Singapore, Hanguana rubinea and H. triangulata. The seeds of Hanguana podzolicola are described for the first time. A local conservation assessment is given. As no original material of Hanguana podzolicola could be traced, a neotype is designated here. Following a recent clarification of several historical Hanguana names it is noted here that the correct name for the large helophytic stoloniferous species often cultivated in Singapore under the name Hanguana malayana is Hanguana anthelminthica. An updated key to Hanguana species in Singapore is provided.

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R.P.J. de Kok
Two new records of Litsea (Lauraceae) from Singapore and the lectotypification of twenty-two names from several Lauraceae genera [Page 167 - 177]
Two species of Litsea (Lauraceae) are recorded for Singapore for the first time (Litsea spathacea Gamble and L. tomentosa Blume). Both species are known only from 19th century specimens and must be considered nationally extinct in Singapore. Descriptions and notes on distribution, conservation status and ecology are given. In addition, twenty-two Lauraceae names are lectotypified: Beilschmiedia curtisii Gamble, B. perakensis Gamble; Cinnamomum subavenium Miq.; Cryptocarya argentea Gamble, C. infectoria (Blume) Miq., C. tomentosa Blume; Lindera lucida (Blume) Boerl., L. malaccensis Hook.f.; Litsea accedens (Blume) Boerl., L. amara Blume var. attenuata Gamble, L. gracilis Gamble, L. gracilipes Hook.f., L. griffithii Gamble, L. lanceolata (Blume) Kosterm., L. machilifolia Gamble, L. machilifolia Gamble var. angustifolia Gamble, L. megacarpa Gamble, L. pustulata Gamble, L. sarawacensis Gamble, L.singaporensis Gamble, L. spathacea Gamble, L. umbellata (Lour.) Merr.

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M. Dančák, M. Hroneš, R.S. Sukri, F. Metali & A.A. Joffre
Novitates Bruneienses, 9. A synopsis of Epirixanthes (Polygalaceae) in Brunei Darussalam and notes on species elsewhere [Page 179 - 187]
The genus Epirixanthes Blume is revised for Brunei Darussalam. Four species are recognised for the country: Epirixanthes cylindrica Blume, E. elongata Blume, E. kinabaluensis T.Wendt and E. papuana J.J.Sm., with the two latter species being newly recorded for the Brunei flora. A single collection from Brunei that was formerly identified as Epirixanthes pallida T.Wendt is now confirmed as E. papuana. A revised key for the genus is included.

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M. Ardiyani, M.F. Newman & A.D. Poulsen
A new species of Zingiber (Zingiberaceae) east of Wallace’s Line [Page 189 - 199]
Zingiber Mill. is distributed from India to the Pacific but only a few species are known from east of Wallace’s Line, whereas the area to the west is rich in species. A recent collection from limestone at Bantimurung, South Sulawesi, Indonesia represents a new eastern species, Zingiber ultralimitale Ardiyani & A.D.Poulsen, which is described, illustrated, and barcoded using three of the four barcoding loci (rbcL, trnH-psbA and ITS). Placement of this species using morphological evidence is ambiguous but a combination of evidence from morphology, pollen anatomy and molecular analysis indicates that it belongs to Zingiber sect. Zingiber.

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G.G. Hambali, S. Sunarti & Y.W. Low
Syzygium jiewhoei (Myrtaceae), a new endemic tree from Western New Guinea, Indonesia [Page 201 - 210]
Syzygium jiewhoei Hambali, Sunarti & Y.W.Low, a new species from Western New Guinea, Indonesia, is described and illustrated. It is closely related to Syzygium recurvovenosum (Lauterb.) Diels but differs in a range of vegetative and reproductive morphological characteristics.

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C. Puglisi & D.J. Middleton
A revision of Microchirita (Gesneriaceae) in Thailand [Page 211 - 284]
Microchirita (C.B.Clarke) Yin Z.Wang (Gesneriaceae: Didymocarpoideae) in Thailand is revised and 29 species are recognised, two of which have three varieties each. Eight new species are described, Microchirita albocyanea C.Puglisi, Microchirita glandulosa C.Puglisi, Microchirita hypocrateriformis C.Puglisi, Microchirita limbata C.Puglisi, Microchirita luteola C.Puglisi, Microchirita tadphoensis C.Puglisi, Microchirita tetsanae C.Puglisi, Microchirita thailandica C.Puglisi; three new varieties are described, Microchirita involucrata var. gigantiflora C.Puglisi, Microchirita mollissima var. glabra C.Puglisi, Microchirita mollissima var. glandulophylla C.Puglisi; and one name is combined at a new rank, Microchirita involucrata var. capitis (Craib) C.Puglisi. Two lectotypifications are made, one of which is a second step lectotypification. A key to all taxa is given, all taxa are described, and many are illustrated.

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W.H. Chen, D.J. Middleton, H.Q. Nguyen, H.T. Nguyen, L.V. Averyanov, R.Z. Chen, K.S. Nguyen, M. Möller & Y.M. Shui
Two new species of Oreocharis (Gesneriaceae) from Northwest Vietnam [Page 295 - 305]
Two new species of Oreocharis (Gesneriaceae), O. argyrophylla W.H.Chen, H.Q.Nguyen & Y.M.Shui and O. blepharophylla W.H.Chen, H.Q.Nguyen & Y.M.Shui, from the Xuan Nha nature reserve, Van Ho district, Son La province, in northwestern Vietnam are described. They are compared to their most similar species and diagnostic characteristics are provided.

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S. Li, Z.B. Xin, X. Hong, L.F. Fu & F. Wen
Primulina wuae (Gesneriaceae), a new species from southern China [Page 307 - 313]
A new species, Primulina wuae F.Wen & L.F.Fu (Gesneriaceae), is described from the southern part of China. This new species is most similar to Primulina pseudoroseoalba Jian Li et al., P. roseoalba (W.T.Wang) Mich.Möller & A.Weber, P. subrhomboidea (W.T.Wang) Yin Z.Wang and P. beiliuensis B.Pan & S.X.Huang var. fimbribracteata F.Wen & B.D.Lai, but differs from these in characters such as the size and indumentum of the bracts, the indumentum of the pedicels and anthers, the length of the pistils etc. A provisional conservation assessment is also provided.

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Year of Publication: 2017, Vol. 69 (1)

Date Published 24 May 2017
A.R. Rafidah
Taxonomy and conservation status of Microchirita (Gesneriaceae) in Peninsular Malaysia [Page 1 - 31]
A revision of Microchirita (C.B.Clarke) Yin Z.Wang (Gesneriaceae) in Malaysia is presented as a precursory paper for the Flora of Peninsular Malaysia account. The taxonomic treatment includes a key for identification, detailed descriptions of the species, information on seed morphology (illustrated by Scanning Electron Microscopy micrographs), and a discussion on distributions, including maps, and the conservation status for each species.

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M. Rodda
Index of names and types of Hoya (Apocynaceae: Asclepiadoideae) of Borneo [Page 33 - 65]
Types of all Hoya species occurring in Borneo and their synonyms are indicated and clarified. Forty-six lectotypes, nine neotypes and five epitypes are designated.

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Y.W. Low, A.K. Muhammad Ariffin, A.A. Joffre & D. Duratul Ain
Novitates Bruneienses, 8. Macrosolen brunsing (Loranthaceae), a new hemiparasitic shrub from Brunei Darussalam [Page 67 - 73]
Macrosolen brunsing Y.W.Low & Ariffin is described and illustrated here as a new species of aerial hemiparasite based on two collections from the Ladan Hills Forest Reserve, Tutong, Brunei Darussalam. The new species differs from all Macrosolen taxa enumerated in Borneo by its distinct linear leaves ((4–)8–14.5 cm long, 0.1–0.2(–0.25) cm wide).

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I. Haerida
Liverworts of Bali, Indonesia, with new records to the island [Page 81 - 87]
A total of 72 species of liverworts have been found in Bali. Based on recent collections and former records of the species including 31 genera and 17 families, among them, 43 species are new to Bali.

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C.-W. Lin, D.C. Thomas, W.H. Ardi & C.-I Peng
Begonia ignita (sect. Petermannia, Begoniaceae), a new species with orange flowers from Sulawesi, Indonesia [Page 89 - 95]
Begonia ignita C.W.Lin & C.I Peng, a new species of Begonia sect. Petermannia from Sulawesi, Indonesia, is here described and illustrated. It is distinct from other species in Begonia section Petermannia by a character combination including a procumbent stem ascending only at the apex, symmetric or subsymmetric leaves, the presence of a pale band or maculation running parallel to the leaf margin, and orange tepals. A detailed comparison with a morphologically similar species, the Sulawesi endemic Begonia mendumiae M.Hughes, is provided.

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N. Simonsson Juhonewe & M. Rodda
Contribution to a revision of Hoya (Apocynaceae: Asclepiadoideae) of Papuasia. Part I: ten new species, one new subspecies and one new combination [Page 97 - 147]
The large majority of Hoya R.Br. species known from Papuasia were described in the first half of the 20th century and most of these are endemic. Along with Borneo and the Philippines the region is a centre of diversity of the genus. Since 2006 herbarium materials have been studied for a revision of Hoya of New Guinea along with field investigations on Papuasian Hoya since 2010. In the present paper we publish ten new species, Hoya brassii P.I.Forst. & Liddle ex Simonsson & Rodda, H. carrii P.I.Forst. & Liddle ex Simonsson & Rodda, H. edholmiana Simonsson & Rodda, H. evelinae Simonsson & Rodda, H. juhoneweana Simonsson & Rodda, H. krusenstierniana Simonsson & Rodda, H. koteka Simonsson & Rodda, H. stenakei Simonsson & Rodda, H. versteegii Simonsson & Rodda and H. yvesrocheri Simonsson & Rodda, one subspecies, H. juhoneweana ssp. lindforsiana Simonsson & Rodda, and make one new combination, H. urniflora (P.I.Forst.) Simonsson & Rodda, which is also lectotypified.

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S. Lindsay, P.H. Hovenkamp & D.J. Middleton
New combinations and typifications in Aglaomorpha (Polypodiaceae) [Page 149 - 155]
In preparation for a new checklist of Singaporean plants, the Flora of Singapore project, and the Ferns of Thailand, Laos and Cambodia website, new combinations in Aglaomorpha Schott are made to accommodate species formerly placed in Drynaria (Bory) J.Sm. and Christiopteris Copel. Ten names are lectotypified, seven of which are second step lectotypifications, and one name is neotypified.

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Year of Publication: 2016, Vol. 68 (2)

Date Published 15 November 2016
M. Rodda, N. Simonsson Juhonewe & D.J. Middleton
The taxonomic status of the presumed extinct Singaporean Hoya wallichii (Apocynaceae: Asclepiadoideae) [Page 175 - 187]
After critical study of type material and all available collections, the identity of Hoya wallichii (Wight) C.M.Burton as a species distinct from Hoya campanulata Blume is clarified. Hoya wallichii was previously considered to be endemic to Singapore but had become nationally extinct and consequently globally extinct. This study reveals, however, that it is also found in Peninsular Malaysia and Brunei and, even though it is still nationally extinct in Singapore, it is no longer globally extinct. Hoya campanulata is widespread and locally common in Sundaland but also nationally extinct in Singapore. The two species are fully described and illustrated by line drawings and colour photographs. Two conservation assessments are made, three names are lectotypified, and one name is epitypifed. This paper exemplifies how critical taxonomic understanding is fundamental to meaningful conservation assessments.

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R.P.J. de Kok, S. Sengun & G.L.C. Bramley
Two new records for the Lamiaceae of Singapore [Page 189 - 200]
The species of Lamiaceae have recently been revised for Singapore. In total 44 species in 21 genera are recorded, of which 23 species are native, an additional five are probably native, and 16 are non-native species which have naturalised in Singapore. One new record for Singapore has been found (Vitex rotundifolia) and one species reinstated (Callicarpa pentandra) after being ignored for over a hundred years.

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R.P.J. de Kok
Notes on the monotypic genus Hexapora (Lauraceae), endemic to Peninsular Malaysia [Page 201 - 208]
An account of the genus Hexapora (Lauraceae) is presented. It comprises morphological descriptions of the genus and species, a provisional IUCN conservation assessment, ecological information and taxonomic notes. The morphology of the genus is compared to that of a number of possible close relatives, leading to the conclusion that it most likely belongs within the Beilschmiedia clade, and is likely closely related to Sinopora.
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J. Leong-Škorničková & R. Kiew
Hanguana fraseriana (Hanguanaceae), a new species from Peninsular Malaysia [Page 209 - 214]
Hanguana fraseriana, a new species from Peninsular Malaysia, is described and illustrated here.

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T.L. Yao
Nomenclatural updates and new records in Peninsular Malaysian Pentaphylacaceae [Page 215 - 223]
Four nomenclatural updates, viz. Ternstroemia coriacea, T. palembangensis, T. penangiana and T. wallichiana, and two new records T. patens and Eurya glabra in Peninsular Malaysia are presented.

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R. Kiew
Impatiens (Balsaminaceae) species from karst limestone in Kelantan, Malaysia, including three new species [Page 225 - 238]
Peninsular Malaysian Impatiens foxworthyi M.R.Hend. is distinct from the Thai I. opinata Craib. Three new Impatiens species are described: I. glaricola Kiew with purple flowers, I. chikuensis Kiew with pale yellow flowers, and I. vinosa Kiew with deep red flowers. While Impatiens foxworthyi is widespread on karst limestone in Kelantan and Pahang, the three new species are narrowly endemic to Kelantan limestone and are critically endangered.

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R. Kiew, S. Julia & C.Y. Ling
The Calcarea group of Begonia (Begoniaceae) from Borneo, including four new species from Sarawak [Page 239 -255]
Four new species, Begonia kanaensis Kiew & C.Y.Ling, Begonia lingiae S.Julia, Begonia rubrotepala S.Julia and Begonia sadirensis Kiew & S.Julia are described from Sarawak, Borneo. Notes on habitat, distribution and additional specimens examined for Begonia calcarea and B. sabahensis are also provided. A key to the species in the ‘calcarea group’ is provided. The status of the ‘calcarea group’ as belonging to Begonia sect. Diploclinium or to a new section is discussed. A provisional conservation status is assigned to each species.

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S. Julia & R. Kiew
Eight new Begonia (Begoniaceae) species from the Lanjak Entimau Wildlife Sanctuary and Batang Ai National Park, Sarawak, Borneo [Page 257- 277]
Eight new Begonia (Begoniaceae) species, Begonia addrinii S.Julia & Kiew, Begonia celata S.Julia & Kiew, Begonia crassa S.Julia & Kiew, Begonia devexa S.Julia & Kiew, Begonia fractiflexa S.Julia & Kiew, Begonia hirtitepala S.Julia & Kiew, Begonia jamilahanuiana S.Julia and Begonia ubahribuensis S.Julia & Kiew, are described from Lanjak Entimau Wildlife Sanctuary and Batang Ai National Park in Sarawak, Malaysia. Two and four species are only known from Batang Ai National Park and Lanjak Entimau Wildlife Sanctuary respectively while two species are found in both sites. Seven species belong to Begonia sect. Petermannia and the placement of one (Begonia fractiflexa) is uncertain.

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N.K.E. Undaharta & W.H. Ardi
Studies on Begonia (Begoniaceae) of the Moluccas III: A new Begonia from Seram, Indonesia [Page 279 - 285]
A new species of Begonia, Begonia nephrophylla Undaharta & Ardi, is described from Manusela National Park, Seram Island, Moluccas, Indonesia. The species is endemic to Seram and belongs to Begonia section Petermannia. An illustration of the new species and a key to the Moluccan species of Begonia is presented.

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J. Leong-Škorničková, Q.B. Nguyễn, H.Đ. Trần & E. Záveská
Etlingera poulsenii and Hornstedtia bella (Zingiberaceae: Alpinieae), two new species from central Vietnam [Page 287 - 297]
Two new ginger species from central Vietnam, Etlingera poulsenii Škorničk. and Hornstedtia bella Škorničk., are described and illustrated here.

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J.D. Mood, N. Tanaka, M.M. Aung & J. Murata
The genus Boesenbergia (Zingiberaceae) in Myanmar with two new records [Page 299 - 318]
The taxonomic history of Boesenbergia Kuntze (Zingiberaceae) in Myanmar is reviewed. Based on specimen records eight species are currently confirmed as occurring in Myanmar. These include two new records, Boesenbergia albomaculata S.Q.Tong and B. kerrii Mood, L.M.Prince & Triboun. Two previously listed species, Boesenbergia plicata (Ridl.) Holttum and B. thorelii (Gagnep.) Loes., are not considered here due to lack of specimens originating in Myanmar. A key to the species is provided with a description of each based on living material.

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K. Karthigeyan, M. Das Das & L.S. Wijedasa
Memecylon cerasiforme (Melastomataceae): a poorly known species rediscovered, redescribed and newly recorded for India [Page 319 - 326]
The species Memecylon cerasiforme Kurz was previously known only from the type which was collected in Chittagong, Bangladesh. A recent collection of the species from the Jaldapara National Park, West Bengal, India is not only the first since the species was described in 1877 but also the first record of its occurrence in India and the first flowering collection. Its flowers can now be described and illustrated for the first time. An emended description, figure, phenological and habitat information, notes on related species, and a conservation assessment are also provided. The only original material available at Kew is designated here as a lectotype.

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David J. Middleton
Book Review [Page 327 - 328]
Flora Malesiana, series I – Seed Plants. Volume 22: Lythraceae. W.J.J.O. de Wilde & B.E.E. Duyfjes. P.C. van Welzen (Ed.) 2016.

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Year of Publication: 2016, Vol. 68 (1)

Date Published 20 May 2016
D.J. Middleton
A revision of Aeschynanthus (Gesneriaceae) in Singapore and Peninsular Malaysia [Page 1 - 63]
The genus Aeschynanthus Jack is revised for Singapore and Peninsular Malaysia. Four species for Singapore and fourteen species for Peninsular Malaysia are recognised, keys to the species are given, all names are typified, and detailed descriptions of all species are provided. Conservation assessments are provided for all species. Eleven names are lectotypified here and one epitype is designated.

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I.M. Turner
Notes on the Annonaceae of the Malay Peninsula [Page 65 - 69]
Notes concerning the three genera Alphonsea Hook.f. & Thomson, Artabotrys R.Br. ex Kew Gawl. and Stelechocarpus Hook.f. & Thomson (Annonaceae) for the Malay Peninsula are presented. Alphonsea kingii J.Sinclair is accepted as an endemic species and a second-stage lectotypification is presented for Alphonsea cylindrica King. Seven species of Artabotrys are lectotypified. The recently described genus Winitia Chaowasku is reduced to Stelechocarpus and a new combination is made for Winitia expansa Chaowasku.

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K.M. Wong, A.K. Muhammad Ariffin & A.A. Joffre
Novitates Bruneienses, 5. Polyalthia watui (Annonaceae), a new tree species from Brunei, Borneo [Page 71 - 76]
A new species, Polyalthia watui, is described. It resembles Polyalthia bullata King in having bullate leaves with a cordate base, but is distinguished by its flowers with shorter pedicels, longer sepals and petals, subsessile monocarps with long stiff erect hairs; and broad-obovate leaves with fewer pairs of secondary veins. The new species is only known from Brunei’s Belait and Tutong districts and is very likely endemic to the Belait geosyncline that includes these areas.

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D. Girmansyah
Three new species of Begonia (Begoniaceae) from Sumbawa Island, Indonesia [Page 77 - 86]
Three new species of Begonia L., Begonia sumbawaensis Girm., Begonia brangbosangensis Girm. and Begonia jaranpusangensis Girm., are described from Sumbawa, Indonesia. All species are illustrated and identification keys and distribution maps are provided.

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D. Sulistiarini, D. Arifiani & Y. Santika
New records of Orchidaceae from Bali, Indonesia [Page 87 - 95]
During plant inventory work in the forested areas of Mt Mesehe and Mt Merbuk, Jembrana district, Bali, twenty orchid species were collected. Among the species collected, five were confirmed as new records for Bali. The five newly recorded species are Calanthe zollingeri Rchb.f., Plocoglottis plicata (Roxb.) Ormerod, Podochilus serpyllifolius (Blume) Lindl., Styloglossum speciosum (Blume) T.Yukawa & P.J.Cribb, and Vanilla albida Blume. Descriptions of taxa and images are provided.

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R. Kiew
Olea luzonica (Oleaceae), a new name for O. obovata from the Philippines [Page 97 - 98]
A new name, Olea luzonica Kiew, is proposed to replace the later homonym Olea obovata (Merr.) Kiew.

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T. Phutthai & M. Hughes
A new species and a new record in Begonia sect. Platycentrum (Begoniaceae) from Thailand [Page 99 -107]
Begonia khaophanomensis Phutthai & M.Hughes is described from a collection made on granitic rock in Krabi Province in Peninsular Thailand. It is endemic to the typelocality of Khao Phanom Bencha National Park, and is assessed as Least Concern using the IUCN criteria. Begonia macrotoma Irmsch. is noted as a new record for Thailand from collections in Chiangmai, Nakhon Ratchasima and Nakhon Nayok provinces; the species is also found in China, Myanmar, NE India, Nepal and Vietnam. Both species belong to Begonia sect. Platycentrum. A key to the species of Begonia sect. Platycentrum in Thailand is provided.

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J.D. Mood, A.G. Hussain & J.F. Veldkamp
The resurrection of Boesenbergia albosanguinea (Zingiberaceae) with a new record for Peninsular Thailand [Page 109- 124]
Boesenbergia albosanguinea (Ridl.) Loes. (Zingiberaceae) is resurrected from the synonymy of B. prainiana (King ex Baker) Schltr. It is redescribed in detail with comparative tables, figures, and illustrations. This species is a new record for Thailand.

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J.D. Mood, H.Đ. Trần, J.F. Veldkamp & L.M. Prince
Boesenbergia siphonantha (Zingiberaceae), a new record for Thailand and Vietnam with notes on the molecular phylogeny [Page 125 - 137]
Boesenbergia siphonantha (King ex Baker) M.Sabu, Prasanthk. & Škorničk. (Zingiberaceae) is newly recorded from Thailand and Vietnam. Its nomenclatural history, taxonomy, and molecular phylogeny are discussed. Figures, a comparative table and a watercolour illustration are provided.

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F. Wen, T.V. Do, X. Hong, S. Maciejewski & Y.G. Wei
Boeica ornithocephalantha (Gesneriaceae), a new species from northern Vietnam [Page 139 - 144]
A new species, Boeica ornithocephalantha F.Wen, Y.G.Wei & T.V.Do (Gesneriaceae), is described from the northern part of Vietnam. This new species is most similar to Boeica ferruginea Drake, but clearly differs from the latter by the unusual corolla. A provisional IUCN conservation assessment is provided.

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M. Möller, K. Nishii, H.J. Atkins, H.H. Kong, M. Kang, Y.G. Wei, F. Wen, X. Hong & D.J. Middleton
An expansion of the genus Deinostigma (Gesneriaceae) [Page 145 - 172]
Based on molecular, morphological and cytological studies the previously monotypic genus Deinostigma W.T.Wang & Z.Y.Li has been expanded to include several species previously ascribed to Primulina Hance. Deinostigma now comprises seven species, including one previously placed in synonymy. The new combinations Deinostigma cicatricosa (W.T.Wang) D.J.Middleton & Mich.Möller, Deinostigma cycnostyla (B.L.Burtt) D.J.Middleton & H.J.Atkins, Deinostigma cyrtocarpa (D.Fang & L.Zeng) Mich.Möller & H.J.Atkins, Deinostigma eberhardtii (Pellegr.) D.J.Middleton & H.J.Atkins, Deinostigma minutihamata (D.Wood) D.J.Middleton & H.J.Atkins and Deinostigma tamiana (B.L.Burtt) D.J.Middleton & H.J.Atkins are made. Deinostigma eberhardtii is lectotypified. The genus is defined by a combination of an alternate leaf arrangement, hooked hairs on many plant parts, flowers with the pedicel inserted at an angle and off-centre on the receptacle, and, where known, a somatic chromosome number (2n) of < 36. This new circumscription of the genus expands its distribution from Vietnam into South China.
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J.F. Veldkamp
The valid publication of Monolophus (Zingiberaceae) revisited [Page 173 - 174]
The nomenclatural history of Monolophus Delafosse, Guill. & J.Kuhn is discussed. The combinations Monolophus picheansoonthonii (Phokham & Prasarn) Veldk. and Monolophus pubescens (Picheans. & Phokham) Veldk. are made.
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Year of Publication: 2015, Vol. 67 (2)

Date Published 23 December 2015
R.P.J. de Kok
Cryptocarya nitens (Lauraceae), a new species record for Singapore [Page 253 - 259]
Cryptocarya nitens (Blume) Koord. & Valeton is newly recorded for Singapore.  It was discovered during surveys in Bukit Timah Nature Reserve and the Nee Soon Swamp Forest. A description is given, together with a key based mostly on vegetative characters for all Cryptocarya species occurring in Singapore. A short overview of the Lauraceae of Singapore shows that, in total, 57 species belonging to 14 genera have been recorded, of which 47 species in 13 genera are native. Cryptocarya nitens is lectotypified in addition to two of its synonyms.

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Y.Y. Sam
Boesenbergia basispicata (Zingiberaceae), a new record for Peninsular Malaysia [Page 261 - 265]
Boesenbergia basispicata K.Larsen ex Sirirugsa was recently discovered from a limestone hill in Perak, Peninsular Malaysia. This brings the total number of Boesenbergia species in Peninsular Malaysia to 12. A description, colour plates and notes on this species are provided.

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K.M. Wong
Schizostachyum kuisingii, a new species of bamboo (Poaceae: Bambusoideae) from Peninsular Malaysia [Page 267 - 274]
Schizostachyum kuisingii K.M.Wong is a new species of bamboo from Peninsular Malaysia, distinguished from closely related species from adjacent areas in Indonesia, such as Schizostachyum castaneum Widjaja, Schizostachyum lutescens Widjaja and Schizostachyum mampouw Widjaja, by the hairs of the culm internode, glabrescent foliage leaves, leaf ligule form, a palea longer than the lemma and the presence of two lodicules in the flower.

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K.M. Wong, Y.W. Low, A.K. Muhammad Ariffin & A.A. Joffre
Novitates Bruneienses, 4. New records in the Araliaceae, Araucariaceae, Arecaceae, Fagaceae, Musaceae and Thymelaeaceae [Page 275 - 287]
Aralia merrillii C.B.Shang (Araliaceae), Agathis lenticula de Laub. (Araucariaceae), Licuala collina Saw and L. miriensis Saw (Arecaceae), Lithocarpus bullatus Hatus. ex Soepadmo and L. hallieri (Seemen) A.Camus (Fagaceae), Musa lawitiensis var. suratii (Argent) Häkkinen (Musaceae) and Aquilaria microcarpa Baill. (Thymelaeaceae) are newly recorded for the Brunei flora.

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T.L. Yao
Three new species of Loxocarpus (Gesneriaceae) from Sarawak, Borneo [Page 289 - 296]
Three new species, Loxocarpus burttii T.L.Yao, Loxocarpus littoralis T.L.Yao and Loxocarpus segelamensis T.L.Yao are described from Sarawak, Malaysia.
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W.H. Ardi & D.C. Thomas
Studies on Begonia (Begoniaceae) of the Moluccas II: A new species from Seram, Indonesia [Page 297 - 303]
A new species of Begonia L., Begonia galeolepis Ardi & D.C.Thomas, is described from Seram, Maluku province, Indonesia. The species is endemic to Seram and belongs to Begonia section Petermannia. An identification key to the seven Begonia species known from the Moluccas is provided.

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M. Rodda
A new typification of Hoya zollingeriana (Apocynaceae, Asclepiadoideae) [Page 305 - 307]
The typification of Hoya zollingeriana Miq. is discussed and a lectotype is selected from the original material. An earlier typification was based on a specimen belonging to a different taxon and is rejected.

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R.P.J. de Kok
A revision of Cryptocarya (Lauraceae) from Thailand and Indochina [Page 309 - 350]
A revision of the species of Cryptocarya R.Br. (Lauraceae) from Thailand and Indochina (Laos, Cambodia and Vietnam) is presented, comprising a key to species, full descriptions, distribution maps, provisional IUCN conservation assessments, ecological information and ethno-botanical notes where appropriate. In this treatment, 16 species are recognised, one species name is validated (Cryptocarya globularia Kosterm. ex de Kok), nineteen names are lectotypified and nine names are placed into synonymy for the first time. Using standard IUCN criteria, most species are considered to be Least Concern, one is assessed as Data Deficient (C. globularia), and six are Endangered (Cryptocarya chanthaburiensis Kosterm., Cryptocarya hainanensis Merr., Cryptocarya laotica (Gagnep.) Kosterm., Cryptocarya pallens Kosterm., Cryptocarya pustulata Kosterm. and Cryptocarya sublanuginosa Kosterm.).

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H.T. Lưu, J. Leong-Škorničková, L.X.B. Nguyễn, C.T. Đỗ & T.T. Hoàng
Newmania sessilanthera (Zingiberaceae): a new species from Vietnam [Page 351 - 355]
Newmania sessilanthera Lưu & Škorničk., a new species from Phú Yên province in central Vietnam, is described and illustrated here. Notes on this species, the third described to date, and a new key to the species of Newmania N.S.Lý & Škorničk. are provided.
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P.S. Ashton
A few last words on Far Eastern Dipterocarps [Page 357 -360]
Three additions to the Dipterocarpaceae are presented. Recent collections from southern Vietnam have finally revealed the identity of Dipterocarpus condorensis Pierre, necessitating reduction of D. caudatus Foxw. and nomenclatural adjustment of its subspecies; an unexpected novelty, Dipterocarpus pseudocornutus P.S.Ashton, is described from Tawi-Tawi, SW Philippines; while a new lower montane point endemic, Vatica palongensis P.S. Ashton, is reported from West Kalimantan.

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D.M. Johnson & N.A. Murray
A contribution to the systematics of Xylopia (Annonaceae) in Southeast Asia [Page 361 - 386]
Herbarium and field study of Xylopia L. (Annonaceae) for the Flora of Peninsular Malaysia and the Flora of Thailand projects has clarified regional diversity patterns within this ecologically significant lowland rainforest genus. Two species groups represented within Southeast Asian floras are delineated, one centred on Xylopia ferruginea (Hook.f. & Thomson) Baill. and the other on Xylopia malayana Hook.f. & Thomson. In the Xylopia ferruginea group, a new species, Xylopia erythrodactyla D.M.Johnson & N.A.Murray, is distinguished from X. ferruginea, and a new combination, Xylopia sumatrana (Miq.) D.M.Johnson & N.A.Murray, is proposed, based on an earlier name for the species currently known as Xylopia stenopetala Oliv. In the Xylopia malayana group, review of the species Xylopia elliptica Maingay ex Hook.f. & Thomson resulted in the recognition of three additional species: Xylopia platycarpa D.M.Johnson & N.A.Murray, from southern Thailand and northwestern Peninsular Malaysia, Xylopia ngii D.M.Johnson & N.A.Murray, from Peninsular Malaysia, Sumatra and Borneo, and Xylopia heterotricha D.M.Johnson & N.A.Murray, from Sumatra and Borneo. The taxon Xylopia malayana Hook.f. & Thomson var. obscura Kochummen is placed in synonymy under Xylopia elliptica sensu stricto. Xylopia fusca Maingay ex Hook.f. & Thomson var. sessiliflora Kochummen & Whitmore is distinguished from Xylopia fusca, and raised to species status as Xylopia sessiliflora (Kochummen & Whitmore) D.M.Johnson & N.A.Murray. We recognise 23 Xylopia species in the Sundaic region of Southeast Asia, and provide evidence that additional collecting and taxonomic analysis in the region is needed.

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K.M. Wong
Studies in Southeast Asian Melastoma (Melastomataceae), 1. Morphological variation in Melastoma malabathricum and notes on rheophytic taxa and interspecific hybridisation in the genus [Page 387 - 401]
Morphological variation in the widespread Indo-Pacific Melastoma malabathricum L. is discussed, as well as the possibility of hybridisation or introgression with other species. Hypanthium indumentum is a reliable character to diagnose the group and species. Five rheophytic taxa, including four distinctive species and a variant of the widespread M. malabathricum, which are superficially alike because of their stenophyllous leaf form, are enumerated for Southeast Asia and a key is provided for their identification. Melastoma kahayanense K.M.Wong from Borneo is described for the first time and the Sumatran Melastoma stenophyllum Merr. is considered a distinct species and not synonymous to M. malabathricum. Various putative hybrids or introgression products involving M. malabathricum are identified.

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I.M. Turner
Clarifying the nomenclature of Crateva trifoliata (Capparaceae) [Page 403 - 406]
Capparis trifoliata Roxb., the supposed basionym of ‘Crateva adansonii subsp. trifoliata (Roxb.) Jacobs’ and ‘Crateva trifoliata (Roxb.) B.S.Sun’, is shown to represent an illegitimate renaming of Crateva religiosa G.Forst. However, Jacobs effectively excluded the nomenclatural type of Capparis trifoliata, thus avoiding creating a superfluous name, and instead described Crateva adansonii subsp. trifoliata Jacobs validated by the citation of the Latin description of Crateva erythrocarpa Gagnep. Sun also excluded the type of Crateva religiosa, but his effective transfer of C. adansonii subsp. trifoliata to specific rank does not have priority over Crateva erythrocarpa Gagnep., which is therefore the correct name for this taxon when it is considered a distinct species. The name Crateva nurvula Buch.-Ham. is formally lectotypified.

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D.C. Thomas
BOOK REVIEW [Page 407 - 408]
Book Review:
A Guide to Begonias of Borneo. Ruth Kiew, Julia Sang, Rimi Repin & Joffre Ali Ahmad. 2015.

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D.J. Middleton 
BOOK REVIEW [Page 409 - 410]
Book Review:
Forest Trees of Southern Thailand, Volume 1 (A–Es). Simon Gardner, Pindar Sidisunthorn & Kongkanda Chayamarit. 2015.

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