Carex debilis Michaux (Q235)
Carex debilis is a taxon with the rank species within the section Carex sect. Hymenochlaenae
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| English |
Carex debilis Michaux
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Carex debilis is a taxon with the rank species within the section Carex sect. Hymenochlaenae
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Statements
taxon/id/Carex debilis Michaux
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Carex debilis Michaux
Carex debilis
Michaux
FNA Editorial Committee. 2002. Flora of North America north of Mexico. Volume 23: Cyperaceae. Oxford University Press, New York.
accepted
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CA-NB
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CA-NS
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CA-ON
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CA-PE
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CA-QC
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US-AL
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US-AR
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US-CT
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US-DC
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US-DE
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US-FL
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US-GA
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US-IL
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US-IN
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US-KY
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US-LA
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US-ME
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US-MA
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US-MD
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US-MI
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US-MN
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US-MS
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US-MO
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US-NC
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US-NH
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US-NJ
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US-NY
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US-OH
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US-OK
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US-PA
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US-RI
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US-SC
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US-TN
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US-TX
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US-VA
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US-VT
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US-WV
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US-WI
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Plants densely cespitose.
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Culms dark maroon at base;
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flowering-stems 25–100 cm, as long as leaves at maturity or often longer, 0.5–1 mm thick, glabrous but scabrous within inflorescence.
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Leaves: basal sheaths maroon, bladeless, glabrous or rarely minutely pubescent;
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blades flat, 2–7 mm wide, glabrous on both surfaces, margins and abaxial midribs often finely scabrous.
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Inflorescences: peduncles of lateral spikes slender, to 50 mm, usually shorter than spikes or only slightly longer, scabrous;
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of terminal spike 15–50 mm, finely scabrous;
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proximal bracts longer, or more often, shorter than inflorescences;
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blades 1–3.5 mm wide.
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Lateral spikes 2–5, 1 per node, well separated, erect at anthesis, soon nodding, pistillate with 10–25 perigynia attached 2–9 mm apart, linear, 25–80 × 2–3 mm.
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Terminal spike staminate or sometimes gynecandrous with a few pistillate flowers distally;
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15–50 × 0.6–1.2 mm.
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Pistillate scales white-hyaline, sometimes tinged with pale-brown or suffused with chestnut, with broad green midrib, finely red dotted, oblong, 2.8–6 mm, much shorter than mature perigynia, apex obtuse, acute or cuspidate, awn to 0.2 mm, glabrous, distal margin ciliate.
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Perigynia green to olive-green, usually red dotted, prominently 2-ribbed, finely 12–20-veined, loosely enveloping achene, fusiform to lanceovoid, 5–9.5 × 1.1–2.2 mm, membranous, base acute, apex tapering gradually to abruptly contracted beak, glabrous or short-pubescent;
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beak bidentate 0.7–2 mm, including teeth to 1 mm.
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Achenes stipitate, 1.9–2.5 × 1–1.5 mm, stipe 0.5–1.5 mm.
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tinged with pale-brown or tinged with suffused with chestnut
sometimes
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contracted
gradually to abruptly
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