F. Muell., Linnaea 25:425 (1853).
Synonymy: Prostanthera striatiflora
Common name: Jockeys cap, striated (or striped) mintbush.
Erect shrub, 0.2-2 m high; branches very sparsely to sparsely hairy or glabrous; hairs straight to curled, subpatent to antrorse, 0.1-0.2 mm long; very sparsely to sparsely glandular; leaves light- to dark-green, usually dull, glabrous, rarely with an occasional hair, moderately glandular; petiole absent or to c. 1 mm long; lamina narrowly ovate to narrowly elliptic, rarely very narrowly elliptic, 4-38 but usually 8-30 mm long, 1.5-10 mm wide; base acute to subattenuate, often subdecurrent; margin entire; apex acute to obtuse; venation not visible; midrib faint and slightly raised on the abaxial surface.
Pedicel 1.3-2.3 mm long, glabrous, glands absent or moderately glandular; bracteoles usually inserted on the distal third of the pedicel, narrowly ovate or narrowly elliptic to linear, 2.1-6 mm long, 0.3-0.9 mm wide, glabrous or sometimes with an occasional hair, glands absent; calyx light-green, usually with a faint purple tinge above, glabrous, glands absent; tube 2.5-3.4 mm long; lower lobe very broadly to broadly ovate, 2:5-3.9 mm long, 2.3-3.9 mm wide; upper lobe broadly ovate to ovate, 4.6-6.6 mm long, 3-5.2 mm wide; corolla 10-17 mm long, white, inner upper and lateral surfaces of the tube with purple lines present, inner lower surface of tube white with dull-orange to yellow dots or yellow-orange lines often present also; outer surface glabrous basally, sparsely to moderately hairy with hairs 0.1-0.2 mm long on the lobes and distal part of the tube, sparsely glandular; inner surface glabrous in the tube and sparsely hairy on the lobes, glands scattered; tube 10.3-11.4 mm long; lower median lobe spathulate, 6.5-9.8 mm long, 8.5-9.1 mm wide; lateral lobes broadly elliptic to elliptic or broadly oblong, 5.2-8.5 mm long, 4.6-5.6 mm wide; upper median lobe-pair depressed- to very broad-ovate, 5.5-10.4 mm long, 8.5-13.8 mm wide; stamens inserted 3.3-3.7 mm above the base of the corolla; filaments 3-5.2 mm long; anthers 1-1.3 mm long, not crested, connective extended to form a basal appendage 2.3-2.9 mm long, terminating in 1-3 narrowly triangular trichomes; pistil 10.7-13 mm long; ovary more or less cylindrical to cup-shaped, c. 0.5 mm long, densely glandular distally; style 10-11 mm long; stigma lobes 0.2-0.6 mm long.
Fruiting calyx enlarged; mericarps 2-2.5 mm long.
Image source: fig. 556G in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).|
Althofer (1978) Cradle of incense, p. 96; Cunningham et al. (1982) Plants of western New South Wales, p. 580.
This species commonly occurs in skeletal soils of rocky areas in open woodland communities associated with various species of Acacia, Callitris, Cassia and Eremophila.
S.Aust.: NW, LE, GT, FR, EA, EP, NL, MU. W.Aust.; N.T.; N.S.W.
Flowering time: Sept. — Oct.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
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