Cephalotaxus hainanensis
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| Cephalotaxus hainanensis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Cupressales |
| Family: | Taxaceae |
| Genus: | Cephalotaxus |
| Species: | C. hainanensis |
| Binomial name | |
| Cephalotaxus hainanensis | |
| Synonyms[2] | |
| |
Cephalotaxus hainanensis is a species of conifer known by the common name Hainan plum-yew. It is native to southern China (Hainan, Guangdong, Guangxi, and Yunnan), southeastern Tibet, and Myanmar, Thailand, and Vietnam in northern Indochina.[2][3]
When mature it is a tree 10–20 m (33–66 ft) tall.[1] It has sickle-shaped or straight leaves, 2.0–4.5 cm (0.79–1.77 in) long and 3.5–4.5 mm (0.14–0.18 in) wide, with a truncate, circular truncate or nearly cordate base and an acute or slightly acute apex with edges rolling downwards when dry. Male cones are approximately 4–7 mm (0.16–0.28 in) long, and seeds are 2.2–2.8 cm (0.87–1.10 in) long and obovate-elliptic or obovoid.[3]
Range and habitat
This species grows in warmer temperate and subtropical montane rainforests.[1] It inhabits mixed forests and forested ravines from 800–1,200 m (2,600–3,900 ft) elevation.[3] It is sometimes a dominant species in the local ecosystem.[1]
Taxonomy
The species was first described by Hui-lin Li in 1954.[2] It was formerly considered endemic to the island of Hainan,[1] and some considered it a synonym of Cephalotaxus mannii.[4] A 2013 revision of the genus Cephalotaxus affirmed its status as a distinct species, and identified C. harringtonia var. thailandensis as a synonym.[3]