Echinochloa lacunaria (F.Muell.) P.W.Michael & Vickery APNI* Synonyms: Panicum lacunarium F.Muell. APNI*
Description: Erect annual, to 1 m high.
Upper leaves with blade to 7 mm wide; ligule absent.
Inflorescence erect, mostly 8–12 cm long with ± appressed branches; spikelets mostly 2 or 3 together on short pedicels. Spikelets 4–6 mm long, acute, sometimes with a short point, glumes and lower lemma glabrous or minutely scabrous. Lower glume 30–50% of spikelet length, acute to subaristate, 3–5-nerved; upper subequal to spikelet, acuminate to minutely cuspidate, 5-nerved. Lower lemma subequal to upper glume, similar in texture, 5–7-nerved. Fertile lemma c. 4 mm long, crustaceous, convex, smooth, shining, yellowish to grey, apex short and scabrous. Lower palea slightly shorter than fertile floret. Upper palea subequal to fertile lemma, similar in texture. floret. Upper palea subequal to fertile lemma, similar in texture.
Flowering: in response to rain.
Distribution and occurrence: Uncommon, in or near watercourses; south from Menindee.
NSW subdivisions: SFWP
Other Australian states: Vic.
Text by S. W. L. Jacobs & T. A. James
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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