Daviesia dilatata is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, open, glabrous shrub with scattered, often sickle-shaped phyllodes, and orange, red, yellow and dark crimson flowers.
| Daviesia dilatata | |
|---|---|
| |
| 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: | Daviesia |
| Species: | D. dilatata
|
| Binomial name | |
| Daviesia dilatata | |
Description
editDaviesia dilatata is an erect, open, glabrous, shrub with greyish to glaucous foliage, and that typically grows to a height of up to 1 m (3 ft 3 in). Its leaves are reduced to scattered, erect but down-curved, often sickle-shaped phyllodes 7–50 mm (0.28–1.97 in) long and 2–8 mm (0.079–0.315 in) wide with a sharply pointed black tip. The flowers are arranged in clusters of three to eight on a peduncle up to 0.5 mm (0.020 in) long, the rachis 1–2 mm (0.039–0.079 in) long, each flower on a thread-like pedicel 1–3.5 mm (0.039–0.138 in) long with spatula-shaped bracts about 1 mm (0.039 in) long at the base. The sepals are 4–5 mm (0.16–0.20 in) long and joined at the base, the two upper lobes joined for most of their length and the lower three triangular. The standard is elliptic with a central notch, 6.0–6.5 mm (0.24–0.26 in) long, 6–7.5 mm (0.24–0.30 in) wide and orange with a red base and a yellow centre, the wings 6–6.5 mm (0.24–0.26 in) long and dark crimson, and the keel 5–6 mm (0.20–0.24 in) long and dark crimson. Flowering occurs in August and September and the fruit is a flattened, triangular pod 7–8 mm (0.28–0.31 in) long.[2][3]
Taxonomy and naming
editDaviesia dilatata was first formally described in 1995 by Michael Crisp in the journal Australian Systematic Botany from specimens collected near Ravensthorpe in 1979.[4] The specific epithet (dilatata) means "enlarged", referring to the phyllodes that widen upwards.[5]
Distribution and habitat
editThis species of pea grows in heath and tall shrubland between Nyabing, Bremer Bay and Cape Arid National Park in the Esperance Plains, Jarrah Forest and Mallee biogeographic regions of south-western Western Australia.[3][2]
Conservation status
editDaviesia dilatata is classified as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.[2]
References
edit- ^ "Daviesia dilatata". Australian Plant Census. Retrieved 6 December 2021.
- ^ a b c "Daviesia dilatata". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ a b Crisp, Michael D.; Cayzer, Lindy; Chandler, Gregory T.; Cook, Lyn G. (2017). "A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae)". Phytotaxa. 300 (1): 228–229. doi:10.11646/phytotaxa.300.1.1.
- ^ "Daviesia dilatata". APNI. Retrieved 6 December 2021.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 183. ISBN 9780958034180.