Carex retroflexa Muhlenberg ex Willdenow (Q484)
Carex retroflexa is a taxon with the rank species within the section Carex sect. Phaestoglochin
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English |
Carex retroflexa Muhlenberg ex Willdenow
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Carex retroflexa is a taxon with the rank species within the section Carex sect. Phaestoglochin
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Statements
taxon/id/Carex retroflexa Muhlenberg ex Willdenow
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Carex retroflexa Muhlenberg ex Willdenow
Carex retroflexa
Muhlenberg ex Willdenow
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-ON
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Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
CA-ON
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US-AR
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US-DE
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US-FL
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US-IN
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US-KY
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US-LA
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US-MD
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US-MI
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US-NY
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US-OK
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10–500 m
10 meter
500 meter
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Plants without conspicuous rhizomes.
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Culms 10–75 cm, 1.3–1.8 mm wide basally, 0.5–0.8 mm wide distally.
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Leaves: sheaths tight, green, fronts hyaline;
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ligules less than 2 mm, wider than long;
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widest leaf-blades 1.4–3 mm wide.
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Inflorescences with 3–9 spikes, 1–4 cm × 5–9 mm;
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proximal internodes 1–3 times as long as proximal spikes;
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proximal bracts to 6 cm;
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spikes with 3–10 spreading perigynia.
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Pistillate scales hyaline with green midvein, ovate, 2–3 × 1.4–1.6 mm, 3/4 length to equaling perigynia, apex acute to acuminate.
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Anthers 1.5–2.3 mm.
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Perigynia green to pale-yellow, faces weakly veined, 2.5–3.2 × 1.2–1.8 mm, base of body spongy, thickened and longitudinally striate adaxially, spongy region 0.8–1.5 mm, margins entire, serrulate distally;
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beak 0.7–1 mm, apical teeth 0.1–0.3 mm.
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Stigmas straight or slightly twisted, 0.05 mm wide.
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Achenes ovate-circular, 1.3–1.6 × 1.3–1.5 mm. 2n = 40.
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1-3 times as long as proximal spikes
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