Common name: Thirft-leaved Triggerplant
Stylidium armeria (Labill.) Labill. APNI* Description: Perennial, sometimes rhizomatous herb.
Leaves tufted at base, erect to spreading, narrowly lanceolate to narrowly oblanceolate, mid- to dark green, not bifurrowed; margins membranous with serrations, serrated at apex only, or entire; apex acute.
Scape > than 2 mm wide, glandular-pubescent above lowest flower, glandular to glabrescent below, flowers 30–120 in simple to condensed erect racemes. Calyx ovoid, c. 6 mm long, glandular-pubescent, lobes equal, shorter than tube, united into 2 lips. Corolla tube c. 5 mm long, lobes paired laterally, obovate to lanceolate; labellum ovate, linear appendages shorter than labellum, throat appendages 8, prominent, unequal, to half the length of corolla lobes, white with purple or yellow tips, papillate-glandular. Column 8–12 mm long; anthers dark-rimmed, stigma orbicular.
Capsule subcylindric, c. 8–15 mm long; seeds 1–1.2 mm long, reddish-brown.
Distribution and occurrence:
NSW subdivisions: NWS
Other Australian states: Vic. Tas. S.A.
2 subspecies recognised, only S. armeria subsp. armeria present in NSW. Stylidium armeria subsp. pilosifolium only occurs in Victoria and differs in having generally shorter leaves that are densely pilose on both surfaces.
Text by S.F. McCune (July 2021)
Taxon concept: Raulings, E.J. & Ladiges, P.Y. (2001) Australian Systematic Botany 14(6):928-931
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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