Jacksonia grevilleoides is a species of flowering plant in the family Fabaceae and is endemic to the south west of Western Australia. It is a prostrate or erect shrub with variably-shaped phylloclades, yellow-orange flowers and woody, densely hairy pods.
| Jacksonia grevilleoides | |
|---|---|
| |
| In the Australian National Botanic Gardens | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Jacksonia |
| Species: | J. grevilleoides
|
| Binomial name | |
| Jacksonia grevilleoides | |
Description
editJacksonia grevilleoides is a prostrate or erect shrub that typically grows up to 0.3–3 m (1 ft 0 in – 9 ft 10 in) high and 0.4–1 m (1 ft 4 in – 3 ft 3 in) wide, its branches greyish green and prominently ribbed. Its phylloclades are irregular in size and shape, often branched, 35–73 mm (1.4–2.9 in) long and 14–18.6 mm (0.55–0.73 in) wide, the lobes sharply-pointed. The leaves are reduced to egg-shaped, reddish-brown scales, 1.3–2.2 mm (0.051–0.087 in) long and 1.3–1.4 mm (0.051–0.055 in) wide. The flowers are attached singly on the lobes of phylloclades on a straight pedicel 1.1–3.1 mm (0.043–0.122 in) long. There are egg-shaped bracteoles with toothed edges, 0.8–2.1 mm (0.031–0.083 in) long and 0.6–0.9 mm (0.024–0.035 in) wide on the pedicels. The floral tube is 0.8–2.1 mm (0.031–0.083 in) long and the sepals are membranous, the lobes 9.8–12.5 mm (0.39–0.49 in) long, 1.6–2.8 mm (0.063–0.110 in) wide and fused at the base for 0.5–0.8 mm (0.020–0.031 in). The standard petal is yellow-orange, rarely with red markings, 4.5–7.3 mm (0.18–0.29 in) long and 5.0–8.8 mm (0.20–0.35 in) wide, the wings yellow-orange, 5.5–8.2 mm (0.22–0.32 in) long, and the keel yellow-orange, 5.0–6.7 mm (0.20–0.26 in) long. The filaments of the stamens are greenish white, 5.3–8.7 mm (0.21–0.34 in) long. Flowering occurs from November to April, and the fruit is a woody, densely hairy, narrowly elliptic pod, 7.9–9.5 mm (0.31–0.37 in) long and 2.7–3.0 mm (0.11–0.12 in) wide.[2][3]
Taxonomy
editJacksonia grevilleoides was first formally described in 1853 by Nikolai Turczaninow in the Bulletin de la Société Impériale des Naturalistes de Moscou from specimens collected by James Drummond.[2][4][5] The specific epithet (grevilleoides) means 'Grevillea-like'.[6]
Distribution and habitat
editThis species of Jacksonia grows in sand or clay on flats and slopes in woodland or shrubland in the Stirling Range, Fitzgerald River National Park and at Cape Riche in the Avon Wheatbelt and Esperance Plains bioregions of south-western Western Australia.[2][3]
Conservation status
editJacksonia grevilleoides is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[3]
References
edit- ^ "Jacksonia grevilleoides". Australian Plant Census. Retrieved 17 November 2024.
- ^ a b c Chappill, Jennifer A.; Wilkins, Carolyn F.; Crisp, Michael D. (2007). "Taxonomic revision of Jacksonia (Leguminosae: Mirbelieae)". Australian Systematic Botany. 20 (6): 491–494. doi:10.1071/SB06047.
- ^ a b c "Jacksonia grevilleoides". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ "Jacksonia grevilleoides". Australian Plant Name Index. Retrieved 17 November 2024.
- ^ Turczaninow, Nikolai (1853). "Papilionaceae. Podalyrieae et Loteae Australasicae Non-Nullae, Hucusque non Descriptae". Bulletin de la Société Impériale des Naturalistes de Moscou. 26 (1): 259–260. Retrieved 17 November 2024.
- ^ George, Alex; Sharr, Francis (2021). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 210. ISBN 9780958034180.