Daviesia pseudaphylla
Daviesia pseudaphylla, commonly known as Stirling Range daviesia,[1] is a species of flowering plant in the family Fabaceae and is endemic to the Stirling Range in the south-west of Western Australia. It is an open, spreading, glabrous shrub with low-lying stems, scattered, cylindrical phyllodes indistinguishable from branchlets, and orange-yellow and dark reddish flowers.
| Daviesia pseudaphylla | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Daviesia |
| Species: | D. pseudaphylla |
| Binomial name | |
| Daviesia pseudaphylla | |
Description edit
Daviesia pseudaphylla is an open, spreading, low-lying, glabrous shrub that typically grows up to 0.35 m (1 ft 2 in) high and 1.3 m (4 ft 3 in) wide. Its phyllodes are widely scattered, cylindrical, up to 300 mm (12 in) long and 0.75–1.5 mm (0.030–0.059 in) wide and indistinguishable from the branchlets. The flowers are usually arranged singly or pairs on a peduncle up to 1 mm (0.039 in) long, each flower on a pedicel about 4 mm (0.16 in) long with spatula-shaped bracts about 4 mm (0.16 in) long at the base. The sepals are 3.0–3.5 mm (0.12–0.14 in) long and joined at the base the upper two lobes joined for most of their length and the lower three about 1 mm (0.039 in) long. The standard petal is broadly elliptic, 9–10 mm (0.35–0.39 in) long, 8–10 mm (0.31–0.39 in) wide, and yellow-orange with a dark purple back. The wings are about 8 mm (0.31 in) long and yellow-orange, the keel about 6 mm (0.24 in) long and dark reddish. Flowering occurs from July to September and the fruit is a triangular pod 14–17 mm (0.55–0.67 in) long.[1][3][4][5]
Taxonomy edit
Daviesia pseudaphylla was first formally described in 1995 by Michael Crisp in Australian Systematic Botany from specimens collected in the Stirling Range by Kenneth Newbey in 1978.[3][6] The specific epithet (pseudaphylla) means "false-leafless", referring to the species' appearing to lack phyllodes.[7]
Distribution and habitat edit
Stirling Range daviesia is only known from two small populations in the Stirling Range where it grows on gentle slopes in open mallee and heath near the foot of the range.[3][8]
Conservation status edit
Daviesia pseudaphylla is declared an "endangered" species under the Australian Government Environment Protection and Biodiversity Conservation Act 1999,[1] and as "threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions,[4] meaning that it is in danger of extinction.[9] The main threat to the species is inappropriate fire regimes, and a potential threat is from dieback due to Phytophthora cinnamomi.[1][10]
References edit
- ^ a b c d e Department of the Environment (2020). "Species Profile and Threats Database: Daviesia pseudaphylla — Stirling Range Daviesia". www.environment.gov.au/sprat. Department of the Environment, Canberra. Retrieved 21 April 2020.
- ^ "Daviesia pseudaphylla". Australian Plant Census. Retrieved 4 April 2022.
- ^ a b c Crisp, Michael D.; Cayzer, Lindy; Chandler, Gregory T.; Cook, Lyn G. (2017). "A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae)". Phytotaxa. 300 (1): 204. doi:10.11646/phytotaxa.300.1.1.
- ^ a b "Daviesia pseudaphylla". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
- ^ Crisp, Michael (1984). "Notes on Daviesia and Jacksonia (Leguminosae: Papilionoideae) for the Flora of the Perth Region". Nuytsia. 5 (1): 164–165. Retrieved 28 March 2022.
- ^ "Daviesia pseudaphylla". APNI. Retrieved 4 April 2022.
- ^ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 285. ISBN 9780958034180.
- ^ "Approved Conservation Advice for Daviesia pseudaphylla (Stirling Range Daviesia)" (PDF). Australian Government Department of Agriculture, Water and the Environment. Retrieved 4 April 2022.
- ^ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 4 April 2022.
- ^ "Invasive Species Compendium: Daviesia pseudaphylla". www.cabi.org. from the original on 10 June 2020. Retrieved 20 April 2020.