Common name: Summer Grass, Crab Grass
Digitaria sanguinalis (L.) Scop. APNI*
Description: Variable spreading annual usually < 1 m high.
Leaves with sheath usually sparsely hairy with tubercle-based hairs; ligule 1–2 mm long; blade mostly 4–8 mm wide, glabrous or sparingly hairy.
Racemes mostly 4–13, 3–30 cm long, on a common axis to 6 cm long, the spikelets rather densely arranged, paired, 1 pedicel very short, the other about as long as the spikelet. Spikelets c. 2.75–3 mm long. Lower glume 0.2–0.4 mm long, nerveless; upper 30–50% as long as the spikelet, 3-nerved. Sterile lemma equal to the spikelet, 7-nerved, the lateral or all the nerves scabrous all along or only towards the apex, the median 3 nerves more widely spaced than the lateral. Fertile floret about as long as the spikelet, pale grey or slightly purplish.
Distribution and occurrence: Widespread weed of cultivation. Native of temp. regions.
NSW subdivisions: *NC, *CC, *SC, *NT, *CT, *ST, *NWS, *CWS, *SWS, *SWP, *SFWP, *LHI
Other Australian states: *Qld *Vic. *Tas. *W.A. *S.A.
Text by S. W. L. Jacobs & C. A. Wall
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.