Wuodendron
| Wuodendron | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Magnoliids |
| Order: | Magnoliales |
| Family: | Annonaceae |
| Subfamily: | Malmeoideae |
| Tribe: | Miliuseae |
| Genus: | Wuodendron B.Xue, Y.H.Tan & Chaowasku[2] |
| Species: | W. praecox
|
| Binomial name | |
| Wuodendron praecox (Hook.f. & Thomson) B.Xue, Y.H.Tan & X.L.Hou[2]
| |
| Synonyms[3] | |
| |
Wuodendron is a genus of plants in the family Annonaceae and tribe Miliuseae, containing the type and only species Wuodendron praecox.[2] It is distributed from northeastern India north to southern China and southeast through most of Mainland Southeast Asia.[2][4]
Conservation status and description
The single species (under its synonym P. litseifolia) is described as a subtropical and tropical forest tree growing to 40 m tall, with greyish brown bark and glabrous, brown branches.[5] Under this name it has been considered Endangered on the IUCN Red List,[1] which considers it to have a much smaller range (only Yunnan, China) than the wider range now recorded,[3] considering the synonyms and revised nomenclature.
The leaves are elliptic and 90-200 × 45-80 mm on 6-10 mm petioles; they are adaxially furrowed, glabrous and often with an axillary bud at the base. Reticulate veins are elevated on both surfaces, with 10-16 secondary veins on each side of midvein. Inflorescences are single-flowered and axillary, on 20 - 35 mm, glabrous peduncles. Sepals are triangular to lanceolate, approx. 12 mm, puberulent on the outside and glabrous inside. The petals are broadly linear, 60-90 × 7-11 mm, with a midrib and 2-4 parallel secondary veins. There are many stamens, approx. 1.5 mm, truncate at the apices. There are 5 or 6, glabrous carpels, with 3 ovules per carpel; stigmas are clavate and puberulent. The fruit are oblong to ovoid (30-35 × 20-25 mm) and singular on 10-30 mm stalks; constricted between seeds (typically 3 per monocarp), glabrous and warty. In southern China, flowering is from April-July and fruiting is from May-September.[5]
References
- ^ a b Group, China Plant Specialist (2004-04-30). "IUCN Red List of Threatened Species: Polyalthia litseifolia". IUCN Red List of Threatened Species. Retrieved 2021-02-07.
- ^ a b c d Xue, Bine; Tan, Yun-Hong; Thomas, Daniel C.; Chaowasku, Tanawat; Hou, Xue-Liang; Saunders, Richard M. K. (2018). "A new Annonaceae genus, Wuodendron, provides support for a post–boreotropical origin of the Asian–Neotropical disjunction in the tribe Miliuseae". Taxon. 67 (2): 250–266. doi:10.12705/672.2. Retrieved 2 December 2020.
- ^ a b "Wuodendron praecox (Hook.f. & Thomson) B.Xue, Y.H.Tan & X.L.Hou". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2 December 2020.
- ^ "Wuodendron B.Xue, Y.H.Tan & Chaowasku". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2 December 2020.
- ^ a b Flora of China: Polyalthia litseifolia C. Y. Wu ex P. T. Li (retrieved March 2021)