Carex argyrantha

Tuckerman ex Dewey

Amer. J. Sci. Arts, ser. 2, 29: 346. 1860.

Common names: Silvery-flowered sedge carex argenté
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 358. Mentioned on page 334, 357.

Plants loosely cespitose. Culms 30–100 cm. Leaves: sheaths papillose, summits U-shaped; distal ligules 3.5–5 mm; blades 4–5 per fertile culm, green, without auricles, 17–37 cm × 2–5 mm, pliable. Inflorescences arching or nodding from proximal spike, open at least proximally, silvery greenish yellow, 2.5–6.5 cm × 7–17 mm; proximal internode 7–18 mm; 2d internode 3–10 mm; often aristate or long-aristate; proximal bracts scalelike. Spikes (3–) 7–15, widely spaced except the distal densely aggregated, proximal 1 often stalked, nearly globose or ovoid, 6–17 × 4.5–7 mm, base clavate or attenuate, apex rounded. Pistillate scales silvery pale green with pale or green midstripe, lance-subulate, (3.2–) 3.5–4.1 (–4.6) mm, shorter and narrower than or equaling perigynia, margin white-hyaline, to 0.6 mm wide, apex acute. Perigynia ascending to spreading, uniformly pale green to straw colored, conspicuously, evenly (4–) 5–8 (–10) -veined on each face, ovate to obovate, planoconvex, 3–4.5 × 1.9–2.3 mm, 0.6 mm thick, usually widest at 2/5–1/2 total length, margin flat, including wing 0.2–0.6 mm wide, finely granular-papillose; beak whitish at tip, flat, ciliate-serrulate to within 0.3 mm of tip, abaxial suture inconspicuous, distance from beak tip to achene 1.2–2 mm. Achenes oblongovate, 1.5–1.75 × 1–1.2 mm, 1.4–1.6 times as long as wide, 0.5 mm thick. 2n = 80.


Phenology: Fruiting mid summer.
Habitat: Dry clearings, open woods, on acidic, rocky, or sandy substrates, rock outcrops
Elevation: 0–700+ m

Distribution

V23 622-distribution-map.jpg

N.B., N.S., Ont., Que., Conn., Maine, Md., Mass., Mich., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.

"widest" is not a number."+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

... more about "Carex argyrantha"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.175 cm1.75 mm <br />0.00175 m <br />) +
biconvex +
smaller +
1mm;1.2mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Tuckerman ex Dewey +
shortened +
persistent +
attenuate +  and clavate +
not enlarged +
ciliate-serrulate +
17 cm170 mm <br />0.17 m <br /> (37 cm370 mm <br />0.37 m <br />) +
4 (?) +  and 5 (?) +
v--shaped +
2mm;5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Silvery-flowered sedge +  and carex argenté +
round +  and trigonous +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
N.B. +, N.S. +, Ont. +, Que. +, Conn. +, Maine +, Md. +, Mass. +, Mich. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, Tenn. +, Vt. +, Va. +  and W.Va. +
0–700+ m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry clearings, open woods, on acidic, rocky, or sandy substrates, rock outcrops +
yellow +  and silvery greenish +
nodding +  and arching +
long-aristate +  and aristate +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
white-hyaline +
granular-papillose +
0.2mm +  and 0.6mm +
green +  and pale +
with (1-)3-6(-30) bristles and/or scales +
(4-)5-8(-10)-veined +
uniformly pale green +  and straw colored +
ascending +  and spreading +
0.6 +  and 3-4.5×1.9-2.3 +
Fruiting mid summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.7 cm7 mm <br />0.007 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Amer. J. Sci. Arts, ser. +
adventitious +
0.41 cm4.1 mm <br />0.0041 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
green +  and silvery pale +
basal +  and proximal +
lance-subulate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.41 cm4.1 mm <br />0.0041 m <br />) +
shorter and narrower +
herbaceous +  and membranous +
not differentiated +
papillose +
cylindric +
Illustrated +  and Endemic +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
u--shaped +
Carex argyrantha +
Carex sect. Ovales +
species +
plant +  and cespitose +