Common name: Early Meadow Grass
Poa infirma Kunth APNI* Description: Loosely tufted yellowish-green annuals to c. 25 cm tall. Culms usually erect to spreading, very slender, smooth.
Sheaths keeled, smooth, thin; ligule membranous, to 3 mm long; blade with an abruptly pointed or blunt tip, 0.5–8 cm long, 1–4 mm wide, folded or opening out, thin, minutely rough on the margins.
Inflorescence lanceolate to ovate, 0.5–10 cm long, loose, branches very fine, smooth. Spikelets ovate or oblong, 2–4 mm long, 2–4-flowered, readily breaking beneath each lemma at maturity. Glumes keeled, blunt, thinly membranous, 1–3-nerved. Lemmas oblong and blunt in side view, keeled, membranous, 5-nerved, densely hairy; palea as long as lemmas, two keels densely hairy.
Distribution and occurrence: Grows with P. annua, usually in disturbed, weedy areas, and may simply be a cleistogamous form of that species.
NSW subdivisions: *ST
Text by Jacobs, S.W.L., Whalley, R.D.B. & Wheeler, D.J.B.
Taxon concept: Grasses of New South Wales, Fourth Edition (2008).
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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