Latin name:
Abies delavayi Franch. subsp. fansipanensis (Q.P. Xiang) Rushforth
(A. delavayi var. nukiangensis Farjon &Silba)
Abies delavayi Franch. subsp. fansipanensis (Q.P. Xiang) Rushforth; Photo from
threatenedconifers.rbge.org.uk
Vernacular Name :
Family:
Pinaceae
Morphology:
An medium or large- sized tree, up to 15-30m high and 1m in diameter. Twigs glabrous or pubescent. Bark greyish with reddish spots and lenticels. Buds elliptic-ovoid, 8mm long. Leaves spiral, straight, lineair, 1.2-4.3x 0.15-0.28cm, curved, apex lightly emarginated; nerves evident beneath, stomata arranged into 2 bands on lower surfaces, with 12 lines for each. Male cones axillary, pendulous, cylindrical, over 2cm long, rachis short, reddish. Female cones cylindrical, 6-10x 3-5cm, apex rounded or truncate,. Bracts triangular or suborbiculate , 10x4.5mm, top emarginated. Seeds 2 at the base of scales, 0.5-1cm long, with resinous glands, winged.
Distribution and ecology:
This species is widely distributed from north-east of India, northern Myanmar to south- western China), but A. delavayi subsp. Fansipanensis is endemic to Mt Fan Si Pan of Lao Cai province.It grows on the high slopes and ridges of Mt Fan Si Pan from 2600 to 3000m asl., in primary closed evergreen tropical seasonal mixed subalpine forests. Mean annual temperature of 8.8-10.8oC,annual rainfall of 2,500- 3,500mm. It also can be found in bamboo- dominated forests on granite derived soils, where it is mixed with Tsuga dumosa. Seed is shed annually but seedlings are not shade tolerant.
Uses:
Still not used economically in Vietnam because of its population is small and its habitat is too high and far from. In China, timber is used in construction and exploiting tannin from bark. This subspecies is very rare and threatened , has been listed in Vietnam Red Data Book ) as a Vulnerable subspecies (VU).
Souce: VIET NAM FOREST TREES 1996
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