Parashorea aptera

• Overview
• Description
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Critically Endangered

Description

Family Dipterocarpaceae

Trees , evergreen or semievergreen, rarely deciduous in dry season . Xylem with aromatic resin in intercellular resin canals. Branchlets with stipular scars , sometimes annular . Leaves simple , alternate; stipules persistent or caducous , large or small; leaf blade with lateral veins pinnate, margin entire or sinuate-crenate. Inflorescences few- or many-flowered, terminal or axillary racemes or panicles; flowers usually sweetly scented; bracts usually fugacious and minute, rarely persistent and large. Inflorescences, calyces, petals, ovary, and other parts usually with stellate , squamate , fascicled or free-standing hairs . Flowers bisexual , actinomorphic , contorted. Calyx lobes 5, free or united at base , imbricate in bud if not united. Petals 5, adnate or connate at base. Stamens (10-) 15 to many, free from or connate to petals; filaments usually dilated at base; anthers 2-celled, with 2 pollen sacs per cell (Chinese species) ; connective appendages aristate , filiform or stout. Ovary superior, rarely semi-inferior, slightly immersed in torus, usually 3-loculed, each locule 2-, rarely many ovuled; ovules pendulous, lateral or anatropous . Fruit usually nutlike, sometimes capsular and 3-valved, 1(to many) -seeded, with persistent, variously accrescent calyx of which 2 or more lobes are usually developed into lorate wings. Seed exalbuminous ; cotyledons fleshy , equal or unequal, applanate or folded or cerebriform , entire or laciniate ; radicle directed toward hilum , usually included between cotyledons.

About 17 genera and 550 species: tropical Africa, Asia, and South America (in Asia, most species and genera in NW Borneo) ; five genera and 12 species (one endemic, one introduced ) in China.[1]

Genus Parashorea

Trees evergreen , large, with stout buttresses. Bark fissured , shallowly flaky , grayish mauve-brown, with small but prominent white lenticels at base of fissures and on buttress crowns. Stipules lanceolate, persisting in juveniles; leaf blade oblong to lanceolate. Inflorescence racemose. Flowers and fruit as in Shorea, but flower sepals narrowly lanceolate, imbricate at base only; petals falling separately. Stamens 15; filaments short, dilated ; pollen sacs narrowly oblong, glabrous ; connective appendages short or columnar , relatively stout. Ovary ovoid , small, pubescent ; style filiform , long. Fruit sepals subequal , with narrow thickened base often becoming valvate in fully ripe fruit, narrowly winglike, long; nut globose or ellipsoid .

Fourteen species: Cambodia, China, W Indonesia, Laos, Malaysia, S Myanmar, Philippines, Thailand, Vietnam; one species in China.[2]

Habitat

Ecology: Found below 70 m on sandy soils on low hills .[3]

Taxonomy

Notes

Publishing author : v.Slooten Publication : in Bull . Jard. Bot. Buitenz. Ser. III. viii. 377 (1927).

Similar Species

Members of the genus Parashorea

ZipcodeZoo has pages for 21 species, subspecies, varieties, forms, and cultivars in this genus:

P. aptera · P. buchananii · P. chinensis · P. chinensis var. kwangsiensis · P. densiflora (White Seraya) · P. densiflora kerrii · P. dussaudii · P. globosa (White Seraya) · P. kerrii · P. laotica · P. longisperma · P. lucida (White Meranti) · P. macrophylla (White Lauan) · P. malaanonan (White Lauan) · P. parvifolia · P. plicata · P. poilanei · P. smythiesii · P. stellata (White Seraya) · P. tomentella · P. warburgii

More Info

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• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• Ashton, P.S. 1990. Annotations to: conservation status listings for Dipterocarpaceae.
• Van Steenis, C.G.G.J. 1948. Flora Malesiana. Flora Malesiana Foundation, Leiden.
• Tong Shaoquan & Tao Gouda. 1990. Dipterocarpaceae. In: Li Hsiwen, ed., Fl. Reipubl. Popularis Sin. 50(2): 113-131.

Notes

Contributors

• Ashton, P. 1998. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 19, 2008.
• Ashton, P. 1998. Parashorea aptera. In: IUCN 2006. 2006 IUCN Red List of Threatened Species. <www.iucnredlist.org>. Downloaded on 20 October 2006.
• The International Plant Names Index. Accessed Jan 19, 2007.

Identifiers

• Biodiversity Heritage Library NamebankID: 7143479
• Globally Unique Identifier: urn:lsid:ipni.org:names:321132-1
• International Plant Names Index (IPNI) ID: 321132-1
• IUCN ID: 33159
• Zipcode Zoo Species Identifier: 1021357

Footnotes

1. Xi-wen Li, Jie Li & Peter S. Ashton "Dipterocarpaceae". in Flora of China Vol. 13 Page 48. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
2. "Parashorea". in Flora of China Vol. 13 Page 48, 51. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
3. Ashton, P. 1998. In IUCN 2008. 2008 IUCN Red List of Threatened Species. IUCNRedList.org. Downloaded July 19, 2008. [back]

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