Carex suberecta

(Olney) Britton

Man. Fl. N. States ed. 2, 1057. 1905.

IllustratedEndemic
Basionym: Carex tenera var. suberecta Olney Caric. Bor.-Amer., 3. 1871
Treatment appears in FNA Volume 23. Mentioned on page 367.

Plants cespitose; rhizomes appearing elongate in old clumps. Culms uniformly slender, 40–80 cm; vegetative culms few, inconspicuous, usually fewer than 15 leaves, not strikingly 3-ranked. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, narrow hyaline band or sharp Y-shaped region at collar, adaxially firm, summits U-shaped; distal ligules 1.6–3.3 mm; blades 2–5 per fertile culm, 12–18 cm × 1.5–2.5 mm. Inflorescences stiffly erect, dense to slightly open, brown, 1.5–3 (–3.5) cm × 6–14 mm; proximal internode 2–12 mm; 2d internode 2–7 mm; proximal bracts scalelike, often with bristletips shorter than or equaling inflorescences. Spikes 2–5, distant, distinct, ovoid, 7–12 × 4–7 mm, base rounded or short-acute, apex acute. Pistillate scales reddish-brown, 1-veined midstripe sometimes pale, broadly lanceolate, 2.7–3.6 mm, shorter and narrower than perigynia, apex firm, acute to acuminate. Perigynia 15–80 in larger spikes, appressed, usually golden brown, conspicuously 6–9-veined abaxially, inconspicuously veined adaxially, diamond-shaped, flat except over achene, 4–5 × 2–2.8 mm, 0.4–0.5 mm thick, base subacute or acute, margin flat, including wing 0.6–0.9 mm wide, smooth; beak apprressed, golden brown at tip, flat, 0.7–1.6 (–1.8) mm, 2/5+ length of body, ciliate-serrulate, abaxial suture with hyaline, golden brown margin, distance from beak tip to achene 2–3 mm. Achenes elliptic to ovate, 1.5–1.7 × 0.8–1.1 mm, 0.3–0.4 mm thick. 2n = 72.


Phenology: Fruiting early summer.
Habitat: Calcareous fens and seeps, shores, swales
Elevation: 100–600 m

Distribution

V23 646-distribution-map.jpg

Ont., Ark., Ill., Ind., Iowa, Mich., Minn., Mo., Ohio, Tex., Va., Wis., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Carex suberecta"
elliptic;ovate +
smaller +
0.3mm +  and 0.4mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
(Olney) Britton +
shortened +
persistent +
acute +, subacute +, short-acute +  and rounded +
not enlarged +
Carex tenera var. suberecta +
ciliate-serrulate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
12 cm120 mm <br />0.12 m <br /> (18 cm180 mm <br />0.18 m <br />) +
2 (?) +  and 5 (?) +
v--shaped +
1.5mm;2.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
inconspicuous +
fertile +  and vegetative +
round +  and trigonous +
slender +
40 cm400 mm <br />0.4 m <br /> (80 cm800 mm <br />0.8 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.33 cm3.3 mm <br />0.0033 m <br />) +
Ont. +, Ark. +, Ill. +, Ind. +, Iowa +, Mich. +, Minn. +, Mo. +, Ohio +, Tex. +, Va. +, Wis. +  and W.Va. +
100–600 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Calcareous fens and seeps, shores, swales +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
golden brown +  and hyaline +
0.6mm +  and 0.9mm +
lanceolate +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
shorter and narrower +
with (1-)3-6(-30) bristles and/or scales +
veined +  and 6-9-veined +
erect +  and spreading +
0.4mm +  and 0.5mm +
Fruiting early summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Man. Fl. N. States ed. +
y--shaped +  and sharp +
adventitious +
reddish-brown +
basal +  and proximal +
2-keeled +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distinct +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
u--shaped +
Carex suberecta +
Carex sect. Ovales +
species +
plant +  and cespitose +