Carex micropoda

C. A. Meyer

Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 1: 210, plate 6. 1831.

Illustrated
Synonyms: Carex crandallii Gandoger Carex jacobi-peteri Hultén Carex pyrenaica subsp. micropoda (C. A. Meyer) Hultén Carex pyrenaica var. mondsii Kelso
Treatment appears in FNA Volume 23. Mentioned on page 529.

Plants densely cespitose, tuft-forming; rhizomes inconspiuous. Culms 5–30 (–40) cm. Leaves involute, 0.25–1.5 (–2) mm wide. Pistillate scales light to dark-brown, ovate, shorter than to as long as perigynia, apex obtuse to acute, apex and distal margins frequently hyaline, scarious. Perigynia ascending to spreading even reflexed at maturity, light green becoming straw colored, 3–4 (–5) (including stipe) × 1–1.3 mm; beak dark-brown, much shorter than body of perigynium. Stigmas 2 (–3). 2n = 62 (Chukotka).


Phenology: Fruiting Jul–Aug.
Habitat: Moist meadows, stream banks, seeps, snowbeds and areas irrigated by meltwater
Elevation: 10–4000 m

Distribution

V23 994-distribution-map.jpg

Alta., B.C., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo., Eurasia (Japan), Eurasia (Russia)

Discussion

There is as much variation within the Rocky Mountain Carex crandallii as between C. crandallii and C. micropoda of Alaska and British Columbia. J. A. Calder and R. L. Taylor (1968) reported a weak distinction between a predominately distigmatic coastal race (“micropoda”) and a tristigmatic one (“pyrenaica”) from the interior. T. V. Egorova (1999) illustrated the shapes of perigynia for C. pyrenaica and C. micropoda, and the differences are consistent with what others have noted. Nevertheless, until a more reliable set of characters is found to distinguish these two taxa, all of the North American plants shall be treated as C. micropoda. W. A. Weber and R. C. Wittmann (1992) maintain the North American plants distinct from the European C. pyrenaica at the rank of species, a view that is accepted here. A thorough, worldwide review of relationships among taxa is warranted.

Selected References

None.

Lower Taxa

None.
... more about "Carex micropoda"
trigonous +
smaller +
scarious +
David F. Murray +
C. A. Meyer +
shortened +
rounded +, lanceolate +  and broadly lanceolate rounded-trigonous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bidentate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 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 +
1.5mm +  and 4mm +
round +  and trigonous +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Alta. +, B.C. +, Yukon +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +, Wyo. +, Eurasia (Japan) +  and Eurasia (Russia) +
10–4000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Moist meadows, stream banks, seeps, snowbeds and areas irrigated by meltwater +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.025 cm0.25 mm <br />2.5e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
light green becoming straw colored +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
reflexed +, ascending +  and spreading +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans +
inconspicuous +
adventitious +
light +  and dark-brown +
deciduous +
basal +  and proximal +
cylindric +
Illustrated +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex crandallii +, Carex jacobi-peteri +, Carex pyrenaica subsp. micropoda +  and Carex pyrenaica var. mondsii +
Carex micropoda +
Carex sect. Dornera +
species +
plant +, tuft-forming +  and cespitose +