Citation: Schreber ex Muhlenb., Descr. Gram. 131 (1817).

Synonymy: Panicum ischaemum Schreber in Schweigger, Sp. Pl. Erlang. 16 (1805).

Common name: Crab grass, smooth summer grass, smooth crab grass.

Description:
Annual, with geniculate-ascending or spreading stems, to 40 cm high; leaves glabrous, the blades flat, 3-15 cm long; ligule obtuse or truncate.

Racemes digitate or approximate at the summit of the culm, 2-6 in number, 3-5 (rarely 10) cm long; spikelets usually ternate but sometimes paired above, on unequal pedicels, 2-2.25 mm long; first glume minute or absent; second glume 3-nerved, rather densely and shortly pubescent between the nerves and along the margins, only slightly shorter than the first lemma; first (sterile) lemma 5-nerved, usually glabrous between the median nerves, pubescent between the outer nerves and along the margins; second (fertile) lemma as long as the first lemma, ovate, acute, black with whitish-hyaline margins.

Distribution:  S.Aust.: MU, SL.   N.S.W.; Vic.   North America; native to Europe and Asia. Conservation status: naturalised Flowering time: Flowers; Feb. — July.

SA Distribution Map based on current data relating to specimens held in the State Herbarium of South Australia

Biology: No text

Author: Not yet available