Carex rufina

Drejer

Naturhist. Tidsskr. 3: 446. 1841.

Common names: Carex â écailles rousses
Illustrated
Treatment appears in FNA Volume 23. Treatment on page 393. Mentioned on page 379, 381, 382, 391, 392, 394, 424.

Plants cespitose. Culms obtusely angled, 4–15 cm, glabrous. Leaves: basal sheaths redbrown; sheaths of proximal leaves glabrous, fronts with redbrown spots, veinless, apex U-shaped; blades amphistomic, 1.5–2 mm wide, papillose on both surfaces. Inflorescences: proximal bract longer than inflorescence, 1–1.5 mm wide. Spikes erect, compact; proximal 2–3 spikes pistillate, 1–1.5 cm × 3 mm, base cuneate; terminal spike gynecandrous. Pistillate scales redbrown or black, shorter than perigynia, apex obtuse, awnless. Perigynia ascending, green (becoming white) with redbrown spots on apical 1/2, 3–5-veined on each face, stipitate, tightly enclosing achenes, thin-walled, ellipsoid, 2–2.2 × 1.2–1.5 mm, dull, base truncate, distended, apex obtuse or acute, papillose apically; stipe to 0.3 mm; beak redbrown, 0.2 mm. Achenes not constricted, dull, base adnate to perigynium. 2n = 86.


Phenology: Fruiting Aug–Sep.
Habitat: Wet sandy or gravelly shores
Elevation: 0–800 m

Distribution

V23 700-distribution-map.jpg

Greenland, Man., Nunavut, Que., Europe (Denmark), Europe (Norway), Europe (Sweden)

Discussion

Although placed by K. K. Mackenzie (1931–1933, parts 2–3, pp. 231–231) in sect. Bicolores Tuckerman, Carex rufina is a member of the C. acuta complex, and appears to be very closely related to C. lenticularis. It differs from C. lenticularis in the red-brown spotted perigynia, black scales, and gynecandrous terminal spike.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Carex rufina"
biconvex +
not constricted +
awnless +  and veinless +
redbrown spots +
papillose +
acute;obtuse;obtuse;u--shaped +
redbrown spots +
Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
Drejer +
not +  and fibrous +
distended +  and cuneate +
bidentate +  and emarginate +
0.2 cm2 mm <br />0.002 m <br /> (?) +
papillose +
m--shaped +  and v--shaped +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
Carex â écailles rousses +
redbrown +  and brown +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
prophyllate +, subsessile +, pedunculate +  and staminate +
Greenland +, Man. +, Nunavut +, Que. +, Europe (Denmark) +, Europe (Norway) +  and Europe (Sweden) +
0–800 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet sandy or gravelly shores +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
thin-walled +, stipitate +  and 3-5-veined +
0.2 cm2 mm <br />0.002 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Fruiting Aug–Sep. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathing +, sheathless +  and leaflike +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Naturhist. Tidsskr. +
adventitious +
black +  and redbrown +
basal +  and proximal +
2-keeled +
ladder-fibrillose +  and veined +
cylindric +
Illustrated +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
3 cm30 mm <br />0.03 m <br /> (?) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0 cm0 mm <br />0 m <br /> (?) +  and 0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +
deciduous +
2-3(-4)-fid +
Carex sect. Acutae +, Carex sect. Cryptocarpae +  and Carex sect. Temnemis +
Carex rufina +
Carex sect. Phacocystis +
species +
, +  and staminate +
plant +  and cespitose +