Sophora howinsula

Sophora howinsula, commonly known as lignum vitae or Lord Howe kowhai, is a flowering plant in the legume family. The specific epithet refers to the island to which the species is endemic.[1]

Sophora howinsula
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
Tribe:
Sophoreae
Genus:
Sophora
Species:
S. howinsula
Binomial name
Sophora howinsula
(W.R.B.Oliv.) P.S.Green (1970)[1]
Synonyms
  • Sophora tetraptera var. howinsula W.R.B.Oliv. (1917)
  • Sophora tetraptera subsp. howinsula (W.R.B.Oliv.) Yarkovlev (1967)

Description

It is a tree, growing to 10 m, sometimes 15 m, in height. The wood is hard and durable and was used for house stumps and fence posts. The pinnate leaves are 5–10 cm long. The 1.5–2 cm long yellow pea flowers are produced in racemose inflorescences. The 7–12 cm long pods each contain 5–10 smooth, orange-brown, ellipsoidal, 7 mm long seeds. The flowering season is from mid-July to mid-September.[1]

Distribution and habitat

The plant is endemic to Australia’s subtropical Lord Howe Island in the Tasman Sea. It has a locally common, scattered distribution through the island's lowland hills.[1]

References
  1. " Sophora howinsula ". Flora of Australia Online: Data derived from Flora of Australia Volume 49 (1994). Australian Biological Resources Study (ABRS). Retrieved 2014-02-07.


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