Carex macrochaeta

C. A. Meyer

Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 1: 224. 1831.

Illustrated
Treatment appears in FNA Volume 23. Treatment on page 419. Mentioned on page 417, 418.

Culms aphyllopodic, without dead leaf remains at base, 20–70 cm. Leaf-blades 2–5 mm wide, margins revolute, scabrous at tip. Inflorescences: proximal bracts 4–11 cm, shorter to longer than inflorescences; lateral spikes 10–30 × 6–8 mm, with 15–40 perigynia; terminal spikes 12–32 × 3–8 mm. Pistillate scales lanceolate, 3–7.5 (–9) × 1.6–2.5 mm, narrower that, longer than perigynia, awn to 2–12 mm. Staminate scales oblong-obovate, 4.5–6 × 1.3–2.4 mm, apex bifid to emarginate, at least proximal scales with awn 2–6 mm. Anthers 3.3–5 mm. Perigynia 3.8–6.8 × 1.7–2.3 mm, apex tapering and rounded; beak 0.1–0.3 mm. 2n = 60.


Phenology: Fruiting summer.
Habitat: Marshes, shores, and other wet open places
Elevation: 0–1000 m

Distribution

V23 765-distribution-map.jpg

B.C., Yukon, Alaska, Oreg., Wash., coastal Asia

Discussion

T. V. Egorova (1999) included Carex macrochaeta in sect. Scitae. The species commonly has a white or cream tomentum on many roots, although most individuals have at least some roots with a yellowish tomentum. The sectional placement of this species requires further investigation.

Selected References

None.

Lower Taxa

None.

... more about "Carex macrochaeta"
trigonous +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bifid +  and emarginate +
papillose +
Peter W. Ball +
C. A. Meyer +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
shortened +
rounded +  and tapering +
Limosae +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
aphyllopodic +
purple-brown +  and red +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (70 cm700 mm <br />0.7 m <br />) +
B.C. +, Yukon +, Alaska +, Oreg. +, Wash. +  and coastal Asia +
0–1000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Marshes, shores, and other wet open places +
prophyllate +, pedunculate +  and pistillate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
gynecandrous +  and androgynous +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
emarginate +  and entire +
with (1-)3-6(-30) bristles and/or scales +
sessile +, stipitate +, 3-7-veined +, veinless +  and (3-)5-7-veined +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.68 cm6.8 mm <br />0.0068 m <br />) +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
4 cm40 mm <br />0.04 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans +
adventitious +
staminate +  and pistillate +
0.75 cm7.5 mm <br />0.0075 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
oblong-obovate;lanceolate +
1.3mm;2.4mm +
cylindric +
0 cm0 mm <br />0 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Illustrated +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
persistent +  and deciduous +
2-3(-4)-fid +
Carex macrochaeta +
Carex sect. Limosae +
species +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
plant +  and cespitose +