Common name: Frail Triggerplant
Stylidium paniculatum (Maiden & Betche) A.R.Bean APNI* Synonyms: Stylidium debile var. paniculatum Maiden & Betche APNI*
Description: Herbaceous annual, stems present or absent (with leaves in basal rosette), glabrous.
Leaves 6–30 per plant, scattered along stem, oblanceolate or obovate, 10–25 cm long including petiole, 3–9 wide, glabrous, apex obtuse or acute, base cuneate, margin entire.
Scape 1 per plant, 0.4–0.9 mm in diam., glabrous, inflorescence 10–25 cm long including scape, indeterminate, paniculate; bracts present, bracteoles absent; pedicellate, glandular-hairy. Sepals lanceolate or elliptical, all free, 1–1.5 mm long, glandular hairy, obtuse or acute. Corolla pink, glandular-hairy on tube only; tube with sinus on anterior side only; labellum attached at base of anterior sinus of corolla tube, ovate or orbicular, glandular-hairy, labellum basal appendages less or more than half length of labellum, glabrous. Petals all free, anterior petals 2–3.1 mm long, entire, obtuse, posterior petals 2.9–4 mm long, entire, obtuse. Column of uniform width throughout, glabous or glandular-hairy; stigma sessile.
Capsule ellipsoidal, without raised ribs, 3.6–5.8 mm long excluding sepals; halves detaching distally. Seeds ellipsoidal, c. 0.4 mm long.
Distribution and occurrence: Chiefly north from Tenterfield district. It grows along creeks, drains or low-lying flats where the soil is sandy and moist for much of the year.
NSW subdivisions: NC, NT
Other Australian states: Qld
Stylidium paniculatum differs from S.debile by the paniculate inflorescence and the absence of bracteoles.
Text by L.C. Stanberg, modified by S.F. McCune (July 2021), from Bean. A.R. (1999) Austrobaileya 5(3):446-447.
Taxon concept:
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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