Grevillea biternata is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a shrub with divided leaves with linear lobes and clusters of white flowers.
| Grevillea biternata | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Grevillea |
| Species: | G. biternata
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| Binomial name | |
| Grevillea biternata Meisn.[2]
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| Synonyms[2] | |
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Description
editGrevillea biternata is a shrub that typically grows to a height of 1–2.5 m (3 ft 3 in – 8 ft 2 in) and usually has branchlets densely covered with soft, woolly hairs. The leaves are usually divided with two to three linear lobes, the lobes 15–40 mm (0.59–1.57 in) long, 1.0–2.8 mm (0.039–0.110 in) wide and sharply pointed. The flowers are arranged in cone-shaped or cylindrical groups of eight to thirty on a rachis 7–20 mm (0.28–0.79 in) long, and are pale pale green in the bud stage, later white. The pistil is 3–4 mm (0.12–0.16 in) long. Flowering occurs from July to November and the fruit is an oblong follicle 7–10 mm (0.28–0.39 in) long.[3][4][5]
Taxonomy
editGrevillea biternata was first formally described in 1845 by Carl Meissner in Johann Georg Christian Lehmann's Plantae Preissianae from specimens collected by James Drummond in the Swan River Colony.[6][7] The specific epithet (biternata) means "twice-ternate", referring to the three leaflets of each leaf.[8]
Distribution and habitat
editThis grevillea grows in heath or mallee-woodland between New Norcia, Northampton, Wubin and Wongan Hills in the Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia.[3][4]
Conservation status
editGrevillea biternata is listed as "not threatened" by the Department of Biodiversity, Conservation and Attractions and as "Least Concern" on the IUCN Red List of Threatened Species. It has no major threats, either current or in the near future. Although the population is suspected to be decreasing, it is not declining significantly enough to warrant a threatened or near-threatened category.[1][3]
References
edit- ^ a b Olde, P.; Keighery, G. (2020). "Grevillea biternata". IUCN Red List of Threatened Species. 2020: e.T112647354A113307721. doi:10.2305/IUCN.UK.2020-2.RLTS.T112647354A113307721.en. Retrieved 21 December 2023.
- ^ a b "Grevillea biternata". Australian Plant Census. Retrieved 6 April 2020.
- ^ a b c "Grevillea biternata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ a b "Grevillea biternata". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 20 January 2022.
- ^ "Grevillea biternata". State Herbarium of South Australia. Retrieved 20 January 2022.
- ^ "Grevillea biternata". APNI. Retrieved 20 January 2022.
- ^ Meissner, Carl; Lehmann, Johann G.C. (1845). Plantae Preissianae. Vol. 1. Hamburg. pp. 549–550. Retrieved 20 January 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 147. ISBN 9780958034180.