Carex crawfordii

Fernald

Proc. Amer. Acad. Arts 37: 469, plate 1, figs. 12–14. 1902.

Common names: Carex de Crawford
IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 363. Mentioned on page 254, 335, 336, 341, 342, 360.

Plants densely cespitose. Culms 25–60 (–85) cm; vegetative culms with few leaves clustered at apex. Leaves: sheaths adaxially white-hyaline, summits U-shaped; distal ligules 1.5–6 mm; blades (2–) 3–4 (–5) per fertile culm, 7–22 cm × 2–4 mm. Inflorescences erect, usually dense, green, gold, or dark-brown, 1.8–3 cm8–14 mm; proximal internode 2–3 (–5) mm; 2d internode 1–3 mm; proximal bracts bristlelike, shorter than or equaling inflorescences. Spikes 6–14, distant, distinct, ovoid to broadly ovoid, 8–10 × 4.5–6.5 mm, base and apex acute to truncate. Pistillate scales gold to dark-brown, with whitish, green, or brown midstripe, lanceolate, 3–3.8 mm, shorter and narrower than perigynia, apex acuminate to short-awned. Perigynia ascending, white to gold or light-brown, 0–5-veined abaxially, 0–4-veined adaxially, narrowly lanceolate to narrowly ovate, flat except over achene or, occasionally, planoconvex, 3.4–4.1 (–4.7) × 0.9–1.3 mm, 0.15–0.35 mm thick, margin flat, including wing 0.1–0.2 mm wide, usually crinkled distally; beak brown or redbrown at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene (1.8–) 2.1–3 mm. Achenes ± elliptic, 1.1–1.5 × 0.6–0.8 mm, 0.15–0.35 mm thick; style usually persistent, sinuate. 2n = 52, ca. 66, 70.


Phenology: Fruiting late spring–summer.
Habitat: Often in standing water, moist to wet places, open, sandy, dryish disturbed areas
Elevation: 100–1500 m

Distribution

V23 635-distribution-map.jpg

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon, Alaska, Conn., Idaho, Maine, Mass., Mich., Minn., Mo., Mont., N.H., N.J., N.Y., Oreg., Pa., Vt., Wash., Wis.

Discussion

Selected References

None.

Lower Taxa

None.

"-4.1mm" is not declared as a valid unit of measurement for this property."+timesaslongasinflorescences" is not declared as a valid unit of measurement for this property."not undefined" is not a number.

... more about "Carex crawfordii"
70 +, 66 +  and 52 +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
biconvex +
smaller +
0.15mm +  and 0.35mm +
bidentatate +
papillose +
Joy Mastrogiuseppe +, Paul E. Rothrock +, A. C. Dibble +  and A. A. Reznicek +
Fernald +
shortened +
persistent +
acute +  and truncate +
not enlarged +
ciliate-serrulate +
7 cm70 mm <br />0.07 m <br /> (22 cm220 mm <br />0.22 m <br />) +
3 (?) +  and 4 (?) +
v--shaped +
2mm;4mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex de Crawford +
fertile +  and vegetative +
round +  and trigonous +
25 cm250 mm <br />0.25 m <br /> (60 cm600 mm <br />0.6 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Conn. +, Idaho +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, Mont. +, N.H. +, N.J. +, N.Y. +, Oreg. +, Pa. +, Vt. +, Wash. +  and Wis. +
100–1500 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Often in standing water, moist to wet places, open, sandy, dryish disturbed areas +
dark-brown +, gold +  and green +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
not prophyllate +, sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.15mm +  and 0.35mm +
planoconvex;planoconvex;planoconvex +
brown +, green +  and whitish +
with (1-)3-6(-30) bristles and/or scales +
0-4-veined +  and 0-5-veined +
white +  and gold or light-brown +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Fruiting late spring–summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Proc. Amer. Acad. Arts +
adventitious +
gold +  and dark-brown +
basal +  and proximal +
lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
shorter and narrower +
herbaceous +  and membranous +
not differentiated +
cylindric +
Illustrated +  and Endemic +
distinct +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
ovoid;broadly ovoid +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
persistent +
sinuate +
u--shaped +
Carex crawfordii +
Carex sect. Ovales +
species +
plant +  and cespitose +