Carex aquatilis var. minor

Boott

Ill. Carex, 163. 1867.

IllustratedEndemic
Basionym: Carex stans Drejer Naturhist. Tidsskr. 3: 458. 1841
Treatment appears in FNA Volume 23. Treatment on page 398. Mentioned on page 397, 399, 400.

Culms 35–100 cm, angles scabrous. Leaves: basal sheaths leafless, usually redbrown; blades amphistomic, 5-8 mm wide, papillose on both surfaces. Inflorescences: peduncle of proximal spike not more than 4 cm; proximal bract longer than inflorescence, 4–8 mm wide. Spikes erect; proximal 3–4 spikes pistillate, 2–4 cm × 4–7 mm, base cuneate or attenuate; terminal 1–3 spikes staminate. Pistillate scales pale redbrown with narrow pale midvein. Perigynia obovoid, 2–3 × 1.2–2 mm, apex rounded; beak pale-brown, not more than 0.2 mm, thickened. 2n = 76.


Phenology: Fruiting Jul–Aug.
Habitat: Wet tundra
Elevation: 0–600 m

Distribution

V23 713-distribution-map.jpg

Greenland, N.W.T., Nunavut, Que., Yukon, Alaska.

Discussion

Although extensively intergrading along the Arctic coast, Carex aquatilis var. minor and var. aquatilis appear to be distinct; C. aquatilis var. minor has been reported to maintain its distinctive characteristics in cultivation (J. Cayouette and P. Morisset 1986b). It is reported to hybridize with C. bigelowii (= C. ×nearctica M. Raymond).

Selected References

None.

Lower Taxa

None.

"not undefined" is not a number.

biconvex +
not constricted +
papillose +
Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
shortened +
not +  and fibrous +
attenuate +  and cuneate +
Carex stans +
bidentate +  and emarginate +
papillose +
m--shaped +  and v--shaped +
5mm;8mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and brown +
round +  and trigonous +
35 cm350 mm <br />0.35 m <br /> (100 cm1,000 mm <br />1 m <br />) +
prophyllate +, subsessile +, pedunculate +  and staminate +
Greenland +, N.W.T. +, Nunavut +, Que. +, Yukon +  and Alaska. +
0–600 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet tundra +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Fruiting Jul–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathing +, sheathless +  and leaflike +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Ill. Carex, +
adventitious +
pale redbrown +
basal +  and proximal +
2-keeled +
ladder-fibrillose +  and veined +
cylindric +
Illustrated +  and Endemic +
staminate +  and pistillate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
indistinct +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex sect. Acutae +, Carex sect. Cryptocarpae +  and Carex sect. Temnemis +
Carex aquatilis var. minor +
Carex aquatilis +
variety +
, +  and staminate +
plant +  and not cespitose +