Carex marina

Dewey

Amer. J. Sci. Arts 29: 247, plate X, fig. 74. 1836.

Common names: Carex marin
Illustrated
Synonyms: Carex amblyorhyncha V. I. Kreczetowicz
Treatment appears in FNA Volume 23. Mentioned on page 317.

Plants loosely cespitose, in small clumps; rhizomes short. Culms erect, slender, 10–15 (–30) cm, rough distally. Leaves: sheaths pale-brown abaxially, persisting, inner band thin, hyaline, sometimes red tinged, truncate or shallowly concave at summit; ligules shorter than wide; blades pale green to gray-green, flat or slightly involute, 5–10 cm × 1–2 mm, shorter than culms. Inflorescences 0.7–1.5 cm × 4–7 mm; proximal bracts scalelike, occasionally bristlelike, shorter than spikes. Spikes 2–3 (–4), lateral spikes gynecandrous, closely approximate or the proximal slightly separate, individually distinct, containing 3–8 perigynia, oblong-clavate, 3–6 × 3–5 mm; terminal spike not clavate. Pistillate scales redbrown with lighter center and broad white-hyaline margins oblongovate, subequal to perigynia, apex obtuse. Perigynia appressed-ascending, green-white proximally, pale-brown distally, often brown in age, finely several-veined, elliptic, 2–3 × 1.25–1.5 mm, widest near middle, apex conic with weakly convex, usually entire margin, subcoriaceous; beak indistinct. Achenes redbrown, broadly obovate, 1.25–1.5 × 1 mm, dull to slightly glossy. 2n = 62, 64.


Phenology: Fruiting Jul–Aug.
Habitat: Boggy tundra, gravelly shores
Elevation: 0–200 m

Distribution

V23 555-distribution-map.jpg

Greenland, Man., Nfld. and Labr., N.W.T., Nunavut, Que., Yukon, Alaska

Discussion

Plants from Greenland and Europe often with two spikes and short-beaked perigynia have been called Carex marina subsp. pseudolagopina (Sörensen) Böcher; subsp. marina from North America and Siberia differs in having usually (2–)3(–4) spikes usually equal in size (the terminal spike not larger than the others), narrower leaves, and a more distinct beak. Both types occur in the North American material, subsp. pseudolagopina tends to be more arctic in distribution. The subspecies are not recognized here as separate taxa.

Selected References

None.

Lower Taxa

None.

No values specified.

... more about "Carex marina"
0.125 cm1.25 mm <br />0.00125 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
dull +  and slightly glossy +
smaller +
beaked +  and beakless +
papillose +  and smooth +
subcoriaceous +
Heikki Toivonen +
shortened +
truncate +  and rounded +
indistinct +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
pale green +  and gray-green +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
involute +  and flat +
1mm;2mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex marin +
round +  and trigonous +
slender +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Greenland +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Que. +, Yukon +  and Alaska +
0–200 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Boggy tundra, gravelly shores +
red tinged +  and hyaline +
concave +  and truncate +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
white-hyaline +
with (1-)3-6(-30) bristles and/or scales +
brown +, pale-brown +  and green-white +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
appressed-ascending +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Amer. J. Sci. Arts +
adventitious +
basal +  and proximal +
2-keeled +
subequal +
persisting +
cylindric +
Illustrated +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex amblyorhyncha +
Carex marina +
Carex sect. Glareosae +
species +
plant +  and cespitose +