Abstract:
No Abstract
 

Abstract:
Kwan Koriba (1887-1957), a noted Japanese botanist, educator and academic administrator was given the rank of Brigadier General and appointed Director ot the Singapore Botanic Gardens from December 1942 to August 1945 during the World Was II occupation. As Director he performed his duties exceptionally well, carried out first rate scientific research and treated his British colleagues with compassion and understanding. After the war Prof. Koriba was appointed to be the president of Hirosaki National University.

Abstract:
Deficiency symptoms of essential nutrient elements were induced in Hibiscus rosa-sinensis in a nutrient omission trial in acid-washed sand. An atlas of deficiency symptoms was presented with description on individual deficiency symptons. Dry matter of above- and below-ground parts from control and deficient plants as well as their foliar elemental contents were determined and compared.

Abstract:
One new species of Nepenthes, N. borneensis, from Gunong Besar in Kalimantan Selatan Borneo is described.

Abstract:
One hectare of forest in Pantai Aceh F.R. was enumerated for stems > 10 cm d.b.h., and to a 1 cm d.b.h. lower limit in a 0.05 ha subplot. The large plot was found to contain 3'74 stems belonging to 70 or so species. The Dipterocarpacea was the most abundant family (34% of stems >10 cm d.h.h. Shorea curtisii dominated the largest size class (>30cm d.b.h.) with 48 out of 81 stems. The most numerous species in the sub-canopy were: Shorea maxwelliana, Porterandia anisophylla and Pternandra coerulescens. The floristic composition indicates that Pantai Aceh is a coastal hill dipterocarp forest of the Shorea curtisii-Eugeissona tristis segregate.  Analysis of sand tables, together with the known history of logging on the site, lead to the conclusion that the composition of the forest is changing. More shade-tolerant dipterocarp species such as Shorea maxwelliana are taking over the upper canopy as Shorea curtisii fails to regenerate.

Abstract:
A checklist for the 20 Didymocarpus species on Gunung Tahan is given  Three new species, D. codonion, D.  polyanthoides and D. yongii are descibed. The species Ridley called D. kompsoboea is renamed D. lithophilus. D. filicifolius is reduced to synonomy with D. salicinus and reasons for not recognising var. montanus of D. flavobrunneus are given.

Abstract:
This is a taxonomic treatment of Camellia lanceolata (Bl.) Seem., the only Camellia species found in the Malesian region.

Abstract:
A new species of understorey palm, Licuala thoana L.G. Saw & J. Dransf. is described from Johor, Peninsular Malaysia.

Book Review

Abstract:
Six new species of Bulbophyllum sect. Monilibulbus (Orchidaceae) from Borneo are described: B. kestron, B. leproglossum, B. nubinatum, H pelicanopsis. R. scabrum and H. thymophorum. Full descriptions and detailed line drawings are presented of each species. Possible relationships of sect. Monolibulbus within the genus Bulbophyllum are pointed out.

Abstract:
Upon completion of a revision of the Elaeocarpaceae for the Tree Flora of Malaya Vol 4, which will be published in early 1989, two new species and a new variety were uncovered. These are Elaeocarpus sallehiana, E. symingtonii and E. nitidus var. velutinus, described below.

Abstract:
Adiantum lamrianum Aziz Bidin and Razali Jaman is described as a new species. It is found in undisturbed forest of Trus Madi Range, Sabah.

Abstract:
Calamus aidae E. Fern., C. balerensis E. Fern., C. ornatus Blume var. pulverulentus E. Fern, and Daemonorops polita E. Fern, are described as new taxa of rattans from the Philippines.

Abstract:
All living stems > = 2 cm dbh were marked, identified and mapped at a scale of 1 cm to 1 m in two 0.24-ha plots in the Bukit Timah Nature Reserve, Republic of Singapore. The Fern Valley plot was V-shaped in cross-section and contained a small area of exposed bedrock and several boulders along an ephemeral stream channel; the Jungle Fall Valley plot had no stream channel and neither exposed bedrock nor boulders. In both plots combined (0.48 ha), there were over 290 species representing 53 families. The two plots shared 95 species, while 76 were unique to the Fern Valley plot and 119 to the Jungle Fall Valley plot. Fern Valley had 20% fewer species, 44% fewer stems, 23% less total basal area and 40% fewer woody climbers > = 1.4 m tall than Jungle Fall Valley. Shallower depth to granitic bedrock in Fern Valley is hypothesized to be a contributing factor for this difference. In both plots, the Dipterocarpaceae had the greatest basal area and the Euphorbiaceae the greatest density and number of species. The distributions of Shorea curtisii and Pimelodendron griffithianum along slopes in these small plots conformed to their observed ecological preferences on a larger scale in the Malay Peninsula. The presence of a few old trees of pioneer species with little regeneration indicated an on-going process of recovery from disturbance during and prior to World War II.

Abstract:
The earliest scientific expeditions to the Endau area of Peninsular Malaysia were those by J.R. Logan (1847), N.N. Miklucho-Maclay (1874, 1875), D.F.A. Hervey (1879) and H.W. Lake (1891), although the first documented botanical collections from the area were made in 1892 by H.J. Kelsall during his visit vith Lake. Kelsall's collecting localities included Gunung Janing and the Semberong River. Subsequent botanical visits to the area were made by personnel of the Forest Department of the Straits Settlements and Federated Malay States during the 1920s and 1930s and later by botanists and staff based at the Forest Research Institute at Kepong, the Singapore Botanic Gardens and the University of Malaya. A list is given of these collectors and those during expeditions organised to the Endau-Rompin area by the Malayan Nature Society in 1985-86, their collecting localities and periods. Mention is also made of the herbaria where these collections are curated. This information is presented as a background to future attempts at compiling resource inventories for the Endau-Rompin area, a significant portion of which is being proposed for conservation.

Abstract:
No abstract

Book Review

Abstract:
Two new species of Gesneriaceae, Dissandra porphyrantha (Section Speciosae) and Didymocarpus nitidus are described and illustrated. A new combination, Didymocarpus breviflorus, is made for a species previously included in Didissandra.

Abstract:
Different vegetative parts of Swietenia macrophylla King were used as explants in in-vitro studies. They were cultured in MS medium supplemented with various plant growth regulators. Adventitious shoots could be obtained from the friable callus when the seedling nodal segments were cultured on BA (2, 5 ppm) media. The regenerated shoots could be rooted to form whole plantlets which could be transferred to soil.

Abstract:
The fertilizer needs of some popular shade-loving shrubs were evaluated by a 1 year field trial. Plant growth was the same with or without inorganic fertilizer supplements irrespective of shade conditions and trial plants employed. Nutrients available from the planting mix comprising topsoil: treated sludge (3:1 v/v) appeared to be sufficient for the early growth of shade shrubs.

Abstract:
A survey of the fern flora of Langkawi Islands is presented, including a summary of their habitats and ecology. Of the 145 infrageneric taxa recorded from the islands, 7 are introduced or naturalized and 6 are presumed rare or endemics. Species are listed for both indigenous and secondary plant communities.

Abstract:
Several herbicides were tested for selective control of grass and broadleaf weeds in Tifgreen Bermuda grass turf in golf courses. MSMA (monosodium methanearsonate) was found to selectively control Cyperus kyllingia, Axonopus compressus and Brachiara distachya, three of the most troublesome weeds in the golf courses. Metribuzin selectively controlled Euphorbia thymifolia.

Abstract:
No abstract.

Abstract:
Iron deficiency in Wrightia religiosa was associated with a suboptimed level of "active Fe" in the young leaves. Soil application of Nervanaid Fe 132, a carrier of FeEDTA, at 10 g per plant and particularly at 20 g per plant helped chlorotic plants to regain their healthy vigour. Treatment brought the "active Fe" to levels comparable to or above those of the control.

Abstract:
PP333 (common name paclobutrazol), [(2RS, 3RS)-1- (4-chlorophenyl)-4, 4-dimethyl-2-(l,2,4-triazol-l-yl-) pentan-3-ol)] was tested on Baphia nitida hedges to evaluate its effects on growth. Results show that growth of B. nitida was retarded without phytotoxicity symptoms at the rates of PP333 applied. Growth retardation of up to six months was achievable at the PP333 rates tested, making chemical growth control a useful tool for the maintenance of such hedges at reduced manual pruning and related labour costs.

Abstract:
Trunk cross sections of selected 'Golek' clones increased almost linearly from the age of 5 to 25 years at the high rates of 90 cm2 and 70 cm2 per year for nucellar seedlings and grafted trees respectively. Yields were extremely low and erratic and did not seem to affect tree growth. The highest yield levels ocassionally attained by individual trees amounted to 1 fruit per cm2 trunk cross section. The 2 best seedling trees were far superior to the rest and about as fruitful as the best clone; the latter attained an aggregate crop of 3320 fruit and a trunk size of 1560 cm2 against average values of 1765 fruit and 1580 cm2 for the other grafted clones. Differences between clones were large but not sufficiently cosistent to substantiate them. The results suggest that a similar analysis over the full 45-year experimental period (!) and including the clones of other cultivars in the trial, could be very worthwhile.