Prairie Dropseed - Sporobolus heterolepis
Perennials 40-95 cm tall. Culms erect, slender, glabrous. Leaf sheaths slightly keeled, glabrous or the lower ones pubescent; ligule 0.1-0.3 mm long, apically fringed; blades 7-31 cm long, 1.4-2.4 mm wide, flat or slightly involute, glabrous to scabrous, somewhat keeled. Panicle 11-22 cm long, usually well exserted, open; primary branches spreading; secondary branches often more or less appressed. Spikelets 1(2)-flowered, greyish. Glumes membranous; lower glume (1.2-)1.8-4.5 mm long, 1-nerved or nerveless; upper glume (2.4-)3.2-6 mm long; lemmas 3.2-4.2 mm long, blunt to acute, 1-nerved; paleas about equal to or longer than lemmas; anthers (1.1-)1.7-3 mm long, dark(adapted from: Sutherland, 1986, Flora of the Great Plains).
MB to NM and TX, east to QC and south (sporadically) to GA, TN and VA; most common in eastern Great Plains and upper Midwest. Known from Crook County, WY and several counties in ND and SD adjacent to or near MT (Kartesz in prep. 2012).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Open woods and upland or lowland prairies (Sutherland, 1986, Flora of the Great Plains).
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.