Helwingia

Helwingia
Helwingia japonica var. japonica
Scientific classification
Kingdom:Plantae
Clade:Angiosperms
Clade:Eudicots
Clade:Asterids
Order:Aquifoliales
Family:Helwingiaceae
Decne.[1]
Genus:Helwingia
Willd.

The genus Helwingia consists of shrubs native to eastern Asia, the Himalayas, and northern Indochina. It is the only genus in the family Helwingiaceae.[2][3]

The plants have alternate leaves and small inflorescences which are epiphyllous (growing from the leaves). They are from temperate regions of eastern Asia: for example China, Nepal, and Japan.

The APG II classification (2003) places them in the order Aquifoliales, along with the hollies and Phyllonomaceae.

The family Helwingiaceae does not exist in the Cronquist classification (1981), which places this genus in the Cornaceae (dogwood family).

Species[2]
  1. Helwingia chinensis Batalin - Thailand, Myanmar, Gansu, Guizhou, Hubei, Hunan, Shaanxi, Sichuan, Tibet, Yunnan
  2. Helwingia himalaica Hook.f. & Thomson ex C.B.Clarke - Thailand, Myanmar, Assam, Bhutan, Nepal, Sikkim, Tibet, Chongqing, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Sichuan, Yunnan
  3. Helwingia japonica (Thunb.) F.Dietr. - Japan, Ryukyu Islands, Korea, Taiwan, Myanmar, Assam, Bhutan, Vietnam, Sikkim, Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang
  4. Helwingia omeiensis (W.P.Fang) H.Hara & S.Kuros. - Gansu, Guangxi, Guizhou, Hubei, Hunan, Shaanxi, Sichuan, Yunnan

References

  1. ↑ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-06-26.
  2. 1 2 Kew World Checklist of Selected Plant Families
  3. ↑ Flora of China Vol. 14 Page 227 青荚叶属 qing jia ye shu Helwingia Willdenow, Sp. Pl. 4: 634, 716. 1806, nom. cons., not Helvingia Adanson (1763).
  • Aquifoliales - Angiosperm Phylogeny Website, consulted 2007-01-26.
  • Helwingiaceae, Watson, L., and Dallwitz, M.J. 1992 onwards. The families of flowering plants: descriptions, illustrations, identification, and information retrieval. Version: 29 July 2006.
  • Helwingiaceae from NCBI-Taxonomy
  • Helwingiaceae, USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN Online Database). National Germplasm Resources Laboratory, Beltsville, Maryland. Consulted 2007-01-26.
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