Amentotaxus
| Amentotaxus Temporal range:
| |
|---|---|
| |
| Fossil Amentotaxus needles | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Cupressales
|
| Family: | Taxaceae |
| Genus: | Amentotaxus Pilg. |
| Type species | |
| Amentotaxus argotaenia (Hance) Pilg.
| |
| Species | |
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Amentotaxus is a genus of
reaching 2–15 m tall.The
stomatal bands below. They differ from the related genus Cephalotaxus in the broader leaves, and from Torreya
by the blunt, not spine-tipped leaves.
The species can be either
dioecious; when monoecious, the male and female cones are often on different branches. The male (pollen) cones are catkin-like, 3–15 cm long, grouped in clusters of two to six together produced from a single bud. The female (seed) cones are single or grouped a few together on short stems; minute at first, they mature in about 18 months to a drupe-like structure with the single large nut
-like seed 1.5–3 cm long surrounded by a fleshy covering, orange to red at full maturity; the apex of the seed usually protrudes slightly out of the fleshy covering.
The oldest fossils that are recognisable to the genus are from the Middle-Late
Daohugou Bed of China.[1]
Extant species
| Phylogeny of Amentotaxus[2][3] | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
 |
Amentotaxus argotaenia | Catkin yew | China: Fujian, southern Gansu, Guangdong, Guangxi, Guizhou, western Hubei, Hunan, Jiangsu, north-western Jiangxi, central and south-eastern Sichuan, south-eastern Tibet and southern Zhejiang |
| Amentotaxus assamica | Assam catkin yew | India | |
 |
Amentotaxus formosana | Taiwan catkin yew | Taiwan |
| Amentotaxus hatuyenensis | Vietnam | ||
| Amentotaxus poilanei | Poilane's catkin yew | Vietnam | |
 |
Amentotaxus yunnanensis | Yunnan catkin yew | Laos, Vietnam, and Guizhou and Yunnan in China |
References
External links
Media related to Amentotaxus at Wikimedia Commons
Data related to Amentotaxus at Wikispecies- Gymnosperm Database
- Flora of China
