Carex glareosa subsp. glareosa

Common names: Carex des graviers
Illustrated
Synonyms: Carex amphigena (Fernald) Mackenzie Carex cryptantha T. Holm Carex glareosa var. amphigena Fernald
Treatment appears in FNA Volume 23. Treatment on page 315. Mentioned on page 314.

Culms often curved, weak, 10–25 cm. Leaves ± gray-green, often channeled, rarely flat, 1–2 mm wide. Inflorescences 7–25 × 5–12 mm. Pistillate scales 2–3 mm, rarely enveloping perigynia. Perigynia lightly or obscurely several-veined on faces, 1.5–3.5 × 1–1.5 mm.


Phenology: Fruiting Jun–Aug.
Habitat: Salt marshes, gravelly seashores
Elevation: 0–100 m

Distribution

V23 551-distribution-map.jpg

Greenland, B.C., Man., N.B., Nfld. and Labr., N.W.T., Nunavut, Ont., P.E.I., Que., Yukon, Alaska, Europe

Discussion

G. Halliday and A. O. Chater (1969) recognized two well-defined varieties in the subspecies: var. glareosa and var. amphigena. Variety amphigena, which is the overwhelmingly dominating type in North America, has pale brown to whitish, broadly elliptic-obovate perigynia (1.5–2.5 × 1.3–1.5 mm) contracting abruptly into a minute beak. Variety glareosa often has lanceolate, light brown to whitish, and sometimes distinctly ribbed perigynia more than 2.6 times as long as wide and 2.5–3.5 × 1–1.5 mm in size. According to G. Halliday and A. O. Chater (1969), it is an amphi-Atlantic plant. It occurs in Greenland and a few places in eastern Canada, and it is relatively common in Fennoscandia (Finland and Scandinavia) and northwestern Russia. In many places it grades to the var. amphigena.

Selected References

None.

Lower Taxa

None.

brown +  and redbrown +
1.5 cm15 mm <br />0.015 m <br /> (?) +
dull +  and slightly glossy +
biconvex +
smaller +
1mm;1.25mm +
beaked +  and beakless +
papillose +  and smooth +
Heikki Toivonen +
Wahlenberg +
shortened +
truncate +  and rounded +
inconspicuous +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
flat +  and channeled +
1mm;2mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
yellowbrown +
Carex des graviers +
round +  and trigonous +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Greenland +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Yukon +, Alaska +  and Europe +
0–100 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Salt marshes, gravelly seashores +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
gray-green +
basal +  and cauline +
channeled +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
white-hyaline +
angled;rounded +
with (1-)3-6(-30) bristles and/or scales +
light +  and pale-brown +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
subcoriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Fruiting Jun–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
Kongl. Vetensk. Acad. Nya Handl. +
adventitious +
pale +  and redbrown +
basal +  and proximal +
2-keeled +
subequal +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
cylindric +
Illustrated +
approximate +
distinct +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex amphigena +, Carex cryptantha +  and Carex glareosa var. amphigena +
Carex glareosa subsp. glareosa +
Carex glareosa +
subspecies +
plant +  and cespitose +