Shorea johorensis Foxw.
|Synonyms:||Shorea leptoclados Symington|
|Common Name:||Meranti Pepijat, Majau, Seraya Majau, Meranti Majau|
Shorea johorensis , also known as Meranti Pepijat is a critically endangered tree in Singapore. Growing up to 50 m tall, it has prominent scale-like domatia on its leaves and winged fruit. The wood is used as for light construction, musical instruments and plywood.
Classifications and Characteristics
|Plant Division||Angiosperms (Flowering Seed Plants)|
|Plant Growth Form||Tree|
|Lifespan (in Singapore)||Perennial|
|Mode of Nutrition||Autotrophic|
|Plant Shape||Broad / Mushroom / Hemispherical|
|Maximum Height||50 m|
|Native Distribution||Peninsular Malaysia, Singapore Sumatra and Borneo|
|Preferred Climate Zone||Tropical|
|Local Conservation Status||Native to Singapore (Critically Endangered (CR))|
Description and Ethnobotany
|Growth Form||It is a tree, up to 50 m tall, and 1.6 m diameter. The crown is large and hemispherical with buttresses up to 3 m tall.|
|Foliage||The leaves are oval shaped (9 – 14 cm long and 4.2 – 7.5 cm wide.), papery to thinly leathery and in alternate arrangement. The leaf tip is shortly pointed (up to 7 mm long) while the leaf base is obtuse. Each leaf has 10 – 12 pairs of lateral veins which are faintly visible above while prominently visible on the underside. The first 3 - 6 pairs of lateral veins usually have prominent scale-like domatia and the basal 2 pairs are fused along the midrib on each side. The tertiary veins are ladder-like (scalariform). Stipule is lanceolate and small (0.35 cm long and 0.07 cm wide), and the petiole is about 1.5 – 2 cm long. Short persistent grey hairs are found on the twigs, flower stalks, leaf buds, stipules, petioles, midrib on the upper side of the leaf as well as the lateral veins on underside of the leaves.|
|Flowers||Inflorescence is about 15 cm long and slightly pendulous. Each branchlet bears up to 18 secund flowers. Petals are pale yellow and densely hairy on the parts that are exposed in bud. Each flower has 15 stamens with oblong anthers. The connectival appendage is glabrous and 3 times as long as the anther. Ovary is globose. Style is thread-like (filiform) and twice as long as the ovary. Stylopodium is indistinct.|
|Fruits||The fruit is winged and dry. They are borne on stalk which are 4 – 5mm long. Each fruit comprises of three long calyx lobes (up to 12 cm long and 2.3 cm wide), two shorter lobes (up to 6.5 cm long and 0.6 cm wide) and one oval-shaped nut (2 cm long and 1.4 cm wide) with a short style remnant at the tip.|
|Habitat||It is found in lowland rainforests on well-drained and gently undulating terrain, up to 600 m altitude.|
|Similar||Shorea johorensis is similar to Shorea pauciflora. Foliage, floral and fruit features are key to tell them apart. S. johorensis usually has scale-like domatia at the base of the first 3 – 6 pairs of lateral veins, the connectival appendages are glabrous, and fruits are prominently stalked. While S. pauciflora occasionally have a few glabrous domatia, the connectival appendages are bristle-like towards the tip and fruits are subsessile.|
|Etymology||Latin Shorea, commemorating Sir John Shore (1793-1798), the Governor-General for the British East India Company; Latin johorensis, refers to Johor, Peninsular Malaysia, one of the places where it occurs naturally.|
|Ethnobotanical Uses||Timber & Products ( The timber is used light red meranti. It is used for light construction such as light-duty floor, shelves, musical instruments, coffins, toys and wooden matches. It is also used for plywood, both as face and core veneer. )|
|Plant & Rootzone Preference - Tolerance||Well-Drained Soils|
Fauna, Pollination and Dispersal
|Seed or Spore Dispersal||Abiotic|
Plant Care and Propagation
|Light Preference||Full Sun|
|Water Preference||Moderate Water|
|Plant Growth Rate||Moderate|
|Mature Foliage Colour(s)||Green|
|Mature Foliage Texture(s)||Papery, Leathery|
|Flower Colour(s)||Cream / Off-White|
Ashton, P.S. (1982). Dipterocarpaceae. In: van Steenis, C.G.G.J. (ed.) Flora Malesiana, ser.1,vol. 9, part 2, pp. 237–552, 575–600. The Hague/Boston/London: Martinus Nijhoff/Dr. W. Junk Publishers.
Ganesan, S.K., Lua, H.K. and Ibrahim, A. (2018). Shorea johorensis (Dipterocarpaceae), an addition to the flora of Singapore. Gardens' Bulletin Singapore 70 (1): 19–23.
Soerianegara, I., and Lemmens, R.H.M.J. (Editors). 1993. Plant Resources of South-East Asia Volume 5 (1). Timber Trees: Major Commercial Timbers. Netherlands: Pudoc Scientific Publishers. 610 pages.
|Flora Disclaimer||The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes.|