S.T. Blake, Contr. Qld Herb. 9:33 (1971).
Synonymy: P. parviflorus sensu J. Black, Fl. S. Aust. edn 2, 4:734 (1957).
Common name: Cock spur flower.
Perennial shrubs to 1 m high, usually much-branched, with branches quadrangular becoming soft-wooded at the base, more or less densely covered with simple hairs and gland-tipped hairs or with sessile glands; leaves with the petiole 0.3-0.8 cm long; blade ovate to triangular, 1.5-4.5 x 1-4 cm, crenate to crenately lobed, double-crenate, cuneate to truncate at the base, with simple glandular hairs above, more densely hairy and with larger glands below.
Inflorescence a thyrse with a peduncle 4-8 cm long, with sessile cymose part-inflorescences each with 3-5 rarely 7 pedicellate flowers, with internodes elongated and longer than the part-inflorescences, with scale-like bracts; sepals fused to about half their length, 9-veined, 2-5.5 mm long, elongating after flowering, with pointed lobes at least when fruiting, zygomorphic, with a broad dorsal one, 2 medium lateral ones and 2 narrow anterior ones slightly curved upwards, with simple hairs and few large sessile glands oustide; corolla usually pale-violet, 2-lipped, with a lower lip longer than the tube, 9-12 mm long, with hairs and sessile glands on the outside of both lips, with posterior lip short and broad, with 2 short lateral lobes and broad 2-lobed dorsal lobe, with anterior lip narrowly elliptic-spathulate, slightly undulate; stamens inserted in the throat of the corolla tube, with slender filaments considerably broadened at the base, glabrous; anther 2-celled, more or less enclosed in the anterior lip; ovary on a thick disc, deeply 4-lobed, with a style inserted near the base and curved along the anterior lip of the corolla, with a 2-fid stigma.
Mericarps broadly oblong to almost orbicular in the surface view, c. 1 mm long centripetally compressed, with a concave outer surface and slightly convex inner surface, with a short transversely oblong attachment scar at the base, finely granulate to almost smooth.
||Flowering branch and calyx.
Image source: fig. 555C in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).|
usually in rocky terrain.
S.Aust.: NW, FR, EA, EP. W.Aust.; N.T.
Flowering time: July — Nov.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
Plants from the Flinders Ranges have usually few or none of the large glands on vegetative branches but they increase below the inflorescence while the reverse is found on a plant from the NW region of S.Aust.
Not yet available