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Aira cupaniana Guss.
Family Poaceae
Common name: Silvery Hairgrass

Aira cupaniana Guss. APNI*

Description: Slender annual, erect or occasionally geniculate at the base, to 0.5 m high; culms solitary or tufted, 3- or 4-noded above the base.

Leaves with sheath scabrid; ligule acute, 3–6 mm long; blade to 0.3 mm wide.

Panicle open, broad-ovoid, 4–11 cm long; pedicels up to twice as long as spikelets. Spikelets 2–2.5 mm long. Glumes obtuse, 1-nerved, minutely scabrous along margins and keel. Lemmas 50–65% as long as the glumes, the lower often unawned; awn 2.2–3.5 mm long.


Habit
Photo D. Hardin

Flowering: spring.

Distribution and occurrence: Grows in pastures, disturbed grassland, or open woodland on all soil types. Native of Medit. region.
NSW subdivisions: *NC, *CC, *SC, *NT, *CT, *ST, *NWS, *CWS, *SWS, *NWP, *SWP
Other Australian states: *Qld *Vic. *Tas. *W.A. *S.A.
AVH map***

Text by S. W. L. Jacobs & S. M. Hastings
Taxon concept: Flora of NSW 4 (1993)


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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