Carex microchaeta

T. Holm

Amer. J. Sci. 167: 305. 1904.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 415. Mentioned on page 413, 414, 416.

Culms 5–35 cm. Leaves basal; proximal leaves with blades 5–6 mm wide. Inflorescences: spikes approximate, oblong to elongate, 8–25 × 3–8 mm; proximal spike separate, sometimes pendent and long-pedunculate; lateral spikes 2–4; distal spikes erect, short-pedunculate. Pistillate scales dark-brown to black, ovate or lanceolate, equaling and as wide as perigynia, apex acute or mucronate. Perigynia veinless, ovate, 3-5–4 × 1.5–2 mm, papillose; beak 0.3–0.5 mm, shallowly bidentate or truncate, sparsely papillose or smooth.

Distribution

V23 753-distribution-map.jpg

B.C., N.W.T., Yukon, Alaska, Asia (Russian Far East)

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Perigynia, including beak, reddish brown or purple; midvein of pistillate scales dark, same color as body, inconspicuous. Carex microchaeta subsp. microchaeta
1 Perigynia greenish yellow or yellow-brown, beak black; midvein of pistillate scales lighter color than body, conspicuous. Carex microchaeta subsp. nesophila

"-4mm" is not declared as a valid unit of measurement for this property.

... more about "Carex microchaeta"
trigonous +
papillose +  and smooth +
David F. Murray +
T. Holm +
shortened +
rounded +
smooth +  and papillose +
truncate +  and bidentate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
v--shaped +
5mm;6mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
papillose +  and smooth +
brown +, purple +  and red +
round +  and trigonous +
5 cm50 mm <br />0.05 m <br /> (35 cm350 mm <br />0.35 m <br />) +
short-pedunculate +
B.C. +, N.W.T. +, Yukon +, Alaska +  and Asia (Russian Far East) +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
prophyllate +, pedunculate +, , +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
with (1-)3-6(-30) bristles and/or scales +
ascending +  and erect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
filiform;leaflike +
Amer. J. Sci. +
adventitious +
dark-brown +  and black +
basal +  and proximal +
lanceolate;ovate +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric +
Illustrated +
approximate +
0.8 cm8 mm <br />0.008 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
oblong;elongate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex microchaeta +
Carex sect. Scitae +
species +
plant +, not +  and cespitose +