Carex amphibola Steudel (Q214)
Carex amphibola is a taxon with the rank species within the section Carex sect. Griseae
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Carex amphibola Steudel
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Carex amphibola is a taxon with the rank species within the section Carex sect. Griseae
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Statements
taxon/id/Carex amphibola Steudel
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Carex amphibola Steudel
Carex amphibola
Steudel
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-AL
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US-AR
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US-CT
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US-DE
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US-DC
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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-MD
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US-MA
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US-MI
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US-MS
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US-MO
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US-NJ
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US-NY
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US-NC
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US-OH
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US-OK
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US-PA
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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-WV
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CA-NB
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10–1000 m
10 meter
1,000 meter
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rhizo1me internodes 1.2–2 mm thick.
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Culms dark purple-red to 0.3–2.4 (–7.3) cm high or very rarely brown at base, 15–80 cm.
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Leaves: sheaths glabrous;
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blades green, widest blades (3.7–) 4.4–7 mm wide, smooth abaxially.
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Inflorescences 0.48–0.93 of culm height;
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peduncles of lateral spikes glabrous or barely scaberulous;
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peduncles of terminal spikes 1.6–21 (–37) mm, usually barely exceeding lateral spikes;
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proximal bract sheaths loose, glabrous abaxially, sheath front slightly concave to slightly convex, elongated 0.6–2.2 (–5) mm beyond apex;
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ligules (1.8–) 3.4–7.8 (–12.9) mm;
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Spike (3–) 4–5, distal 2–4 overlapping;
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lateral spikes pistillate, with 3–18 perigynia, 5–26 × 4.6–9.8 mm, ratio of spike length (in mm) to flower number = 1.3–1.9;
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terminal spikes 7–34 × 1.1–2.7 mm.
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Pistillate scales 3.7–8 × 1.2–2.4 mm, margins whitish and usually with redbrown speckles, entire, apex with awn 1.1–6 mm.
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Staminate scales 3.6–4.9 × 1.1–1.9 mm.
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Anthers 2–2.8 mm.
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Perigynia spirally imbricate, 52–64-veined, unwrinkled to wrinkled, oblong-lanceoloid to narrowly oblong-ovoid, obtusely triangular in cross-section, 4.2–5 (–5.2) × 1.5–1.9 (–2.2) mm, (2.2–) 2.5–3.1 times as long as wide, lustrous, base very gradually tapered, apex gradually tapered;
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beak absent or straight, 0–0.2 mm.
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Achenes broadly obovoid to oblong-obovoid, widest at 0.55–0.67 (–0.7) of body length, (2.6–) 2.8–3.4 × (1.3–) 1.5–1.7 (–1.8) mm, loosely enveloped by perigynia;
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stipe straight, (0.3–) 0.4–0.6 mm;
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beak straight, 0.3–0.6 mm.
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oblong-lanceoloid
narrowly oblong-ovoid
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broadly obovoid
oblong-obovoid
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