Comments
provided by eFloras
Carex heterostachya is a rare introduction from eastern Asia; first discovered in 1949, it is still extant and slowly spreading at its only known North American location (A. A. Reznicek 1994).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Plants colonial; rhizomes long-creeping. Culms central, slender, trigonous, 25–60 cm, papillose and scabrous-angled distally. Leaves: basal sheaths brown, bladeless, rapidly disintegrating into fibers; ligules 0.7–1.5 mm, wider than long; blades somewhat glaucous, M-shaped, 1.5–3.2 mm wide, papillose abaxially. Inflorescences 2.5–12 cm; rachis beyond proximal pistillate spikes sharp-angled, often finely scabrous; proximal (1–)2–3(–4) spikes pistillate, not or barely overlapping, ascending; distal spikes erect; terminal 1 spike staminate. Pistillate scales ovate to broadly ovate, apex acute to acuminate-awned, awn to 1.3 mm, glabrous. Perigynia ascending, essentially veinless except for 2 marginal veins, ovoid, 3.1–4.5 × 1.7–2.5 mm, glabrous; beak 0.4–0.8 mm, bidentulate, teeth straight, 0.2–0.3 mm.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
introduced; Ill.; e Asia.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Dry, open or lightly shaded areas; 200m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Carex × fulleri H. E. Ahles
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA