Common name: Yellow Swainson-pea, Yellow Darling Pea
Swainsona pyrophila Joy Thomps. APNI*
Synonyms: Swainsona laxa R.Br. APNI*
Description: Perennial to c. 1 m high; stems glabrous or hairy with a few minute, loose, basifixed hairs.
Leaves mostly 5–15 cm long; leaflets mostly 15–19, obovate-oblong, the lower mostly 10–25 mm long, 4–12 mm wide, apex emarginate, both surfaces glabrous; stipules leafy, 4–7 mm long.
Racemes 15–20-flowered; flowers c. 10 mm long. Calyx glabrous, teeth shorter than tube. Corolla yellow; keel apex acute to obtuse, tip ± lipped or retracted. Style tip straight with a tuft of hairs.
Pod crescent-shaped to elliptic, c. 20–30 mm long glabrous; style c. 3 mm long; stipe 1–4 mm long.
Distribution and occurrence: in mallee on sandy or loamy soil, usually only found after fire.
NSW subdivisions: SWP, SFWP
Other Australian states: Vic. S.A.
Threatened species: NSW TSCA: Vulnerable ROTAP: 3RCa
Text by J. Thompson & T. A. James
Taxon concept: Flora of NSW 2 (1991)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.