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

Prostanthera serpyllifolia

Citation: Briq., Natürl. Pflanzenfam. 4, 3a:220 (1895).

Synonymy: Not Applicable

Common name: None

Small prostrate to erect shrub, to 0.5 rarely 1.6 m high; branches moderately to densely hairy with hairs 0.09-0.5 mm long, very sparsely to moderately glandular; leaves sparsely to densely hairy, occasionally glabrous, sparsely to densely glandular; petiole absent or to 1.5 rarely 3 mm long; lamina oval (rarely suborbicular) to oblong-ovate, 1-13 mm long, 0.5-6 mm wide; base subattenuate to rounded; margin entire, recurved; apex obtuse to rounded; venation indistinct.

Pedicel 0.8-5 rarely to 13 mm long, terete, green or maroon, glabrous or hairy; bracteoles inserted near the base of the calyx, narrowly obovate to oblong, 1.1-5.3 but usually 2-4 mm long, 0.3-1 but usually 0.5-0.8 mm wide; calyx 4.3-12 mm long, maroon or green; outer surface glabrous, or with a few scattered hairs to densely hairy, sparsely to densely glandular; inner surface glabrous; tube 3-7 mm long; lobes broadly triangular, 1.5-4.5 rarely to 5 mm long, 4-6 mm wide; corolla 15-22 mm long, pink to mid-red, mid (metallic) blue-green, occasionally yellow, inner surface paler than the outer surface; outer surface glabrous at the base, sparsely to densely hairy distally; inner surface glabrous; tube 9-17 mm long; lower median lobe oblong-triangular to obovate, 3-4 mm long, 3-4 mm wide, more or less recurved to reflexed; lateral lobes ovate to triangular, often narrowly so, sometimes obovate, 1-4.5 mm long, 1-4 mm wide; adaxial median lobe-pair broadly triangular, 5-6.5 mm long 5-7 mm wide, slightly incurved basally, often recurved distally; stamens inserted c. 8.5-9 mm from the base of the corolla; filaments c. 5.5-9 mm long, with a few glandular trichomes; anthers 1-2 mm long, connective extended to form 1 or 2 short basal appendages 0.4-1.4 rarely to only 0.1 mm long, appendage rarely absent; pistil 20-24 mm long; ovary 0.5-0.8 mm long; style 19-23 mm long; stigma lobes to 0.5 mm long.

Mericarps 1.5-1.7 mm long.

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. Lamina 4-13 mm long, 1-4 rarely to 6 mm wide, more or less flat and straight, usually not recurved or reflexed, leaves not clustered; petiole 0.4-1.5 rarely to 3 mm long; pedicels 3-15 mm long; calyx 6-12 mm long
subsp. serpyllifolia 9a.
1. Lamina 1-3.5 but usually 1.5-3 mm long, 0.5-1 rarely to 1.5 mm wide, recurved to reflexed and/or majority of foliage occurring on short lateral axes so that leaves appear clustered; petiole absent or to 0.5 mm long; pedicel 0.7-2.5 rarely to 5 mm long; calyx 4.3-9.5 but usually 5-7.5 mm long
subsp. microphylla 9b.

Author: Not yet available

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