Daviesia pachyphylla
| Ouch bush | |
|---|---|
| |
| Daviesia pachyphylla in the Fitzgerald River National Park | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Daviesia |
| Species: | D. pachyphylla
|
| Binomial name | |
| Daviesia pachyphylla | |
Daviesia pachyphylla, commonly known as ouch bush,[2] is a species of flowering plant in the family Fabaceae and is endemic to the south of Western Australia. It is usually a slender shrub with often arching branchlets, crowded, sharply-pointed, narrowly conical phyllodes, and yellow to orange and dark reddish-brown flowers.
Description
[edit]Daviesia pachyphylla is usually a slender shrub that typically grows to a height of up to 1.5 m (4 ft 11 in) and often has arching branchlets. Its phyllodes are crowded with overlapping bases, 12–27 mm (0.47–1.06 in) long and 4–10 mm (0.16–0.39 in) wide with a sharply pointed tip. The flowers are arranged in groups of two to seven in leaf axils on a thick peduncle 0.5–5 mm (0.020–0.197 in) long, the rachis 1.25–6.0 mm (0.049–0.236 in) long with bracts 0.5–2 mm (0.020–0.079 in) long at the base. Each flower is on a pedicel 2.0–4.5 mm (0.079–0.177 in) long, the sepals 3.5–4.0 mm (0.14–0.16 in) long and joined for most of their length. The standard petal is heart-shaped, 5.5–6.0 mm (0.22–0.24 in) long and 6.5–8.0 mm (0.26–0.31 in) wide, and yellow with a dark reddish-brown centre, the wings 4.5–7.0 mm (0.18–0.28 in) long and dark reddish-brown, the keel 4–5 mm (0.16–0.20 in) long and dark reddish-brown. Flowering occurs from July to October and the fruit is a flattened, triangular pod 13–14 mm (0.51–0.55 in) long.[3][2]
Taxonomy and naming
[edit]Daviesia pachyphylla was first formally described in 1863 by Ferdinand von Mueller in Fragmenta Phytographiae Australiae from specimens collected by George Maxwell.[4][5] The specific epithet (pachyphylla) means "thick-leaved".[6]
Distribution and habitat
[edit]Ouch bush grows in heath on laterite between the Fitzgerald River National Park, Ongerup, Ravensthorpe and Munglinup in the Esperance Plains and Mallee biogeographic regions of Southwestern Australia.[3][2]
Conservation status
[edit]Daviesia pachyphylla is listed as "not threatened" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions.[2]
References
[edit]- ^ "Daviesia pachyphylla". Australian Plant Census. Retrieved 16 March 2022.
- ^ a b c d "Daviesia pachyphylla". 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): 281–283. doi:10.11646/phytotaxa.300.1.1.
- ^ "Daviesia pachyphylla". APNI. Retrieved 15 March 2022.
- ^ von Mueller, Ferdinand (1863). Fragmenta Phytographiae Australiae. Vol. 4. Melbourne: Victorian Government Printer. pp. 15–16. Retrieved 16 March 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 269. ISBN 9780958034180.