Difference between revisions of "Carex heterostachya"
Enum. Pl. China Bor., 69. 1833.
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|place=69. 1833 | |place=69. 1833 | ||
|year=1833 | |year=1833 | ||
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
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|basionyms= | |basionyms= | ||
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|elevation=200 m | |elevation=200 m | ||
|distribution=Ill.;e Asia. | |distribution=Ill.;e Asia. | ||
| + | |introduced=true | ||
|discussion=<p><i>Carex heterostachya</i> 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).</p> | |discussion=<p><i>Carex heterostachya</i> 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).</p> | ||
|tables= | |tables= | ||
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|publication title=Enum. Pl. China Bor., | |publication title=Enum. Pl. China Bor., | ||
|publication year=1833 | |publication year=1833 | ||
| − | |special status= | + | |special status=Introduced;Illustrated |
| − | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_917.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Paludosae | |section=Carex sect. Paludosae | ||
Revision as of 21:39, 27 May 2020
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.
Phenology: Fruiting Jun–Jul.
Habitat: Dry, open or lightly shaded areas
Elevation: 200 m
Distribution
Introduced; Ill., e Asia.
Discussion
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).
Selected References
None.