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2. Profiles of Tree Species: Asia 283 Cephalotaxus
oliveri Olive Plum Yew
Distribution This
species is found in Guixhou, Hubei, Sichuan, Yannan, Guangdong, Guangxi,
Hunan, Jiangxi, Vietnam and eastern India. Habitat
This species is found in low altitude (300-1500m) subtropical
closed forests. It is mainly found in evergreen broad-leaved
forests or in evergreen and deciduous broad- leaved
mixed forests in valleys and by streams. Population
Status and Trends Populations of C.
oliveri have been rapidly decreasing. This species
is scattered in forests throughout its range (China
Plant Red Data Book, 1992). Regeneration
This is a shade tolerant species which has moderately slow
growth. Seeds germinate after ripening for one year
in the broad-leaf litter; once the seeds have germinated the seedlings
require shade. (China Plant Red Data Book, 1992) Role
of Species in its Ecosystem No information.
Threats This
species is threatened by over-exploitation and habitat loss (China Plant Red Data
Book, 1992). The dioecious nature
of C. oliveri
means that this species is further threatened by infrequent
regeneration (China Plant Red Data Book, 1992). Utilisation
Used for timber. C.
oliveri contains the alkaloids cephalotaxine and
harringtonine which can be extracted from the leaves,
shoots and seeds which have medicinal value for treating
leukaemia and lymphoma (China Plant Red Data Book, 1992), however, no
widespread exploitation has yet taken place (SSC Conifer Specialist Group, 1996).
Trade It
is not known whether international trade in products from this species currently
take place. Conservation
Status IUCN Category and Criteria: VU (A1d) (SSC
Conifer Specialist Group, 1996). Conservation
Measures This species is found in several nature
reserves (Emei Mountain in Sichuan, Shuanghuang Mountains
and Zhangjiajie in Hunan (China Plant Red Data Book, 1992).
Note: C.
oliveri is
a relict
species which
is markedly
different to
other members
of the
same genus (China Plant Red Data Book, 1992). References
Li-Kuo, F. and Jian-Ming, J., 1992. China
Plant Red
Data Book
- Rare
and endangered
plants. Vol.
1.
Science Press:Beijing.
pp.
741. SSC
Conifer Specialist Group, 1996. Discussions held by the SSC Conifer Specialist
Group as part of the WCMC/SSC Conservation
and Sustainable
Management of
Trees Project.
March, 1996.