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

Family: Stylidiaceae
Stylidium perpusillum

Citation: Hook. f., London J. Bot. 6:266 (1847).

Synonymy: Not Applicable

Common name: Slender (or tiny) trigger-plant.

Delicate annual with an erect thread-like stem up to 4 cm tall, with a rosette of usually 4 leaves at the base, usually glabrous except for the inflorescence; leaves sessile, restricted to a rosette at the base of the plant, linear-lanceolate, 1-6 x 1-2 mm, obtuse or acute, entire, fleshy.

Inflorescence a dichasium with 1 rarely 2 or 3 flowers on pedicels usually longer than the flowers and sparsely glandular-pubescent; peduncle 1-3 cm long, sparsely glandular-pubescent; bracts linear-lanceolate, 1-4 mm long; sepals scarcely connate, 2.5-4 mm long, unequal, sparsely glandular-pubescent; corolla with the tube shorter than the sepals, without appendages in the throat, white; lobes oblong-oblanceolate with a rounded apex, vertically paired into a shorter upper and a longer lower lip and with short rounded lobes at the base between the 2 lips, glabrous; labellum lanceolate-acuminate, without lobes; column short, with pale anthers; stigma tufted, protruding; ovary with several ovules on a shortly stalked, spherical central placenta.

Capsule globular, 2-4 mm diam.; no mature seeds available.

image of FSA3_Stylidium_per.jpg Habit and flower.
Image source: fig. 640f in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).

Published illustration: Erickson (1958) Triggerplants, pl. 8, figs 11-17.

Distribution:  Moist areas or swamps in heath or paperbark vegetation.

S.Aust.: NL, SL, KI, SE.   W.Aust.; Vic.

Conservation status: native

Flowering time: Sept., Oct., rarely Nov.

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

Biology: No text

Author: Not yet available

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