Electronic Flora of South Australia
Electronic Flora of South Australia
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Electronic Flora of South Australia species Fact Sheet

Family: Fabaceae
Swainsona murrayana

Citation: Wawra, Oesterr. Bot. Zeitschr. 31:69 (1881).

Synonymy: Swainsona morrisiana, Swainsona murrayana

Common name: Slender Darling pea, slender swainsona, Murray swainson-pea.

Slender erect or ascending herbs, pubescent all over with appressed medifixed flattened hairs; stems 10-30 cm long; leaves 2-9 (usually 4-7) cm long; leaflets 5-9, linear-lanceolate, 12-25 x 1-2.5 mm, acute, flat or with incurved margins, sparsely to densely pubescent below, the terminal being the largest; stipules linear-lanceolate, 2-3 mm long (in S. Aust.), white-pubescent, entire; flowers 7-9 mm long, pink, drying purplish, on slender 4-5 mm long pedicels densely pubescent with dark and/or white appressed hairs.

Flowers several to many (to 20), in lax racemes, on the distal half of the rather sparsely pubescent 10-30 cm long peduncle; bract triangular-lanceolate, 1-2 mm long, scarious, pubescent; bracteoles attached at the base of the calyx, subulate, to 1 mm long, obscured by hairs; calyx 4-5 mm long, rather densely pubescent with loosely appressed dark (blackish) and/or white often basifixed hairs; teeth spreading, narrow-triangular, acuminate, shorter than the tube; standard often asymmetrical, with or without a pair of longitudinal folds at the base; wings as long as the standard; geniculate in the middle, with the lamina projecting upwards, the auricle glabrous or ciliate, rarely woolly; keel shortest; semicircular, bluntly and widely beaked, twisted sideways, nearly always (in S. Aust.) with folds near the claw; ovary subsessile, cylindrical, densely appressed-pubescent; style firm, distinctly flattened, with a slight constriction at its junction with the ovary, twisted with the keel, bearded rather densely in the upper half, the tip sharply often minutely hooked, sometimes with a scarcely discernible tuft or very short hairs behind the hook.

Pod cylindrical, 20-25 x 4-5 mm, tapering gradually at both ends, hoary with basifixed hairs, suture deeply impressed, to 20-seeded; seed cordate-reniform, 1.5-2 x c. 1.5 mm, dark-brown, shiny.

Distribution:  Occurs in S.Aust.; N.S.W.; Vic.

S.Aust.: EA.

Conservation status: native

Flowering time: No flowering time is available

SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia

Biology: No text

Key to Infraspecific taxa:
1. Auricle of the wing-petal ciliate (and woolly) with crinkled hairs; standard tapering gradually into the claw, the breadth of the lamina less than or not greater than the length
subsp. murrayana 17a.
1. Auricle of the wing-petal without hairs; standard sharply contracted into the claw, the lamina distinctly broader than long
subsp. eciliata 17b.

Author: Not yet available

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