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*Digitaria ischaemum (Schreber) Muhlenberg. Common name: Smooth Crab Grass. Phenology: Jul-Nov. Habitat: Fields, lawns, disturbed areas. Distribution: Native of Eurasia.

Origin/Endemic status: Eurasia

Taxonomy Comments: Two varieties have sometimes been recognized. Var. ischaemum has racemes (1-) 2-6, 1-9 (-10) cm long, mostly curved and plants mostly to 4 dm tall. Var. mississippiensis (Gattinger) Fernald has racemes 5-7, 6-15 cm long, mostly stiff and straight and plants to 10 dm tall.

Synonymy ⓘ: = Ar, C, Can, ETx1, FlGr, FNA25, Il, K4, Mi, Mo1, NE, NY, Pa, POWO, Tat, Tn, Va, W, WH3, WV; = Digitaria ischaemum (Schreb.) Muhl. var. ischaemum — RAB; = Syntherisma ischaemum (Schreb.) Nash — S; > Digitaria ischaemum (Schreb.) Muhl. var. ischaemum — F, G, HC, NS; > Digitaria ischaemum (Schreb.) Muhl. var. mississippiensis (Gatt.) Fernald — F, G, HC, NS; > Syntherisma humifusum (Pers.) Rydb. var. humifusum — S13; > Syntherisma humifusum (Pers.) Rydb.) var. mississippiense (Gatt.) Nash — S13; Panicum ischaemum Schreber. Basionym: Panicum ischaemum Schreb. 1804

Links to other floras: = Digitaria ischaemum - FNA25

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: UPL
  • Eastern Mountains and Piedmont: UPL
  • Great Plains: UPL
  • Midwest: FACU
  • Northcentral & Northeast: FACU

Heliophily ⓘ: 8

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image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷

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Horticultural Information

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