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Published In: Species Plantarum. Editio quarta 1(1): 325. 1797. (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native


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3. Leersia virginica Willd. (white grass)

Pl. 158 a; Map 643

L. virginica var. ovata (Poir.) Fernald

Flowering stems 30–150 cm long, mostly spreading, often somewhat flattened. Leaf sheaths glabrous or somewhat roughened with minute stiff, spinelike, downwardly pointed hairs. Leaf blades 5–20 cm long, 3–15 mm wide, the surfaces glabrous or less commonly hairy or somewhat roughened, the margins finely and inconspicuously toothed with minute stiff, spinelike hairs. Inflorescences with all of the branches 1 per node, with loosely overlapping spikelets. Spikelets 3–4 mm long, 1.0–1.4 mm wide, oblong to narrowly elliptic, 2.5–4.0 times as long as wide, the lemma and palea usually with a sparse “eyelash‑like” fringe of hairs along the keel and margins, the surface glabrous or finely hairy. Stamens 2. Fruits 2.0–2.4 mm long. 2n=48. June–October.

Scattered throughout Missouri (eastern U.S. and adjacent Canada west to North Dakota and Texas; Brazil, where possibly introduced). Swamps, sloughs, bottomland forests, mesic upland forests of ravines, and margins of streams, rivers, and spring branches; sometimes emergent aquatics.



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