Carex deflexa

Hornemann

Fors. Oecon. Plantel. ed. 3, 1: 938. 1821.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 535. Mentioned on page 532, 533, 534, 536, 548.

Plants usually loosely cespitose; rhizomes spreading to erect, purplish brown to reddish-brown, 0–10 mm, slender. Culms arching to spreading, 5–31 cm, smooth or scabrous distally; bases (remnants of old leaves) weakly or not at all fibrous. Leaf-blades pale green, shorter to longer than culms, 0.9–2.6 (–3.2) mm wide, herbaceous, glabrous abaxially, scabrous adaxially. Inflorescences with both staminate and pistillate spikes; peduncles of basal spikes slender, elongate, erect; peduncles of distal spikes 0.6–4 (–10) mm; proximal nonbasal bracts leaflike, equaling or exceeding inflorescences. Spikes: pistillate spikes 1–4 (basal spikes 0–2); cauline spikes overlapping, separated by less than 7 mm, with 4–15 perigynia; distal staminate spikes 3.1–11.3 × 0.7–2.7 mm. Scales: pistillate scales pale to dark reddish-brown, with narrow to broad white margins, ovate, 2–2.8 × 1–1.8 mm, shorter than perigynia, apex obutse, acute, or acuminate (cuspidate on some basal spikes); staminate scales ovate, 2.4–4 × 1–1.9 mm, apex acute to acuminate. Anthers 1.2–2.5 mm. Perigynia yellowish green to grayish green, veinless, globose to obovoid, 2.3–3.1 × 1–1.4 mm, as long as or longer than wide; beak often bent, pale green, occasionally with reddish-brown tinge, 0.4–0.8 mm, ciliate-serrulate, apical teeth 0.1–0.2 mm. Stigmas 3. Achenes brown, obovoid, obtusely trigonous in cross-section, 1.3–1.6 × 1–1.4 mm.

Distribution

V23 1003-distribution-map.jpg

Alta., B.C., Man., N.B., N.S., N.W.T., Ont., Que., Sask., Yukon, Alaska, Calif., Colo., Conn., Idaho, Maine, Mass., Mich., Mont., N.H., N.Y., Oreg., Utah, Vt., W.Va., Wash., Wis., Wyo.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Staminate spikes 3.1–5.7 × 0.7–1.1 mm. Carex deflexa var. deflexa
1 Staminate spikes 6.3–11.3 × 1–2.7 mm. Carex deflexa var. boottii
... more about "Carex deflexa"
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
trigonous;obovoid +
1mm;1.4mm +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
beaked +, awned +  and cuspidate +
glabrous +  and pubescent +
reddish-brown tinge +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
William J. Crins +  and Jeff H. Rettig +
Hornemann +
shortened +
rounded +  and tapering +
straight +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
v--shaped +
2mm;4.5mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
separated +  and overlapping +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
brown +  and red +
arching +  and spreading +
round +  and trigonous +
5 cm50 mm <br />0.05 m <br /> (31 cm310 mm <br />0.31 m <br />) +
Alta. +, B.C. +, Man. +, N.B. +, N.S. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Calif. +, Colo. +, Conn. +, Idaho +, Maine +, Mass. +, Mich. +, Mont. +, N.H. +, N.Y. +, Oreg. +, Utah +, Vt. +, W.Va. +, Wash. +, Wis. +  and Wyo. +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
prophyllate +, pedunculate +, staminate +, , +  and pistillate +
shorter to longer +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
narrow to broad +
with (1-)3-6(-30) bristles and/or scales +
yellowish green +  and grayish green +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
scale-like +  and filiform +
exceeding inflorescences +  and equaling +
Fors. Oecon. Plantel. ed. +
purplish brown +  and reddish-brown +
spreading +  and erect +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
adventitious +
staminate +  and pistillate +
pale +  and dark reddish-brown +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
basal +  and proximal +
ovate;ovate +
1mm;1.9mm +
cylindric +
Illustrated +  and Endemic +
staminate +  and pistillate +
0.31 cm3.1 mm <br />0.0031 m <br /> (1.13 cm11.3 mm <br />0.0113 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.27 cm2.7 mm <br />0.0027 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Montanae +
Carex deflexa +
Carex sect. Acrocystis +
species +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
stoloniferous +  and rhizomatous +
plant +  and cespitose +