Carex bonanzensis

Britton

Bull. New York Bot. Gard. 2: 160. 1901.

Illustrated
Synonyms: Carex cajanderi Kükenthal
Treatment appears in FNA Volume 23. Treatment on page 319. Mentioned on page 313, 317.

Plants loosely cespitose; rhizomes short. Culms erect, stiff, 20–50 cm. Leaves: sheaths pale-brown abaxially, inner band hyaline, conspicuously red tinged, concave at summit; ligules as long as broad; blades pale to bluish green or gray-green, flat, 10–25 cm × 2–3 mm, shorter than culms, thin. Inflorescences 2–4 (–6) cm × 5–10 mm; proximal bracts prolonged, subequal to spikes, distal bracts scalelike. Spikes 5–8, gynecandrous, proximal 2 or 3 spikes 1 cm or less apart, distal approximate, containing 10–20 perigynia, oblong, 5–14 × 3–5 mm; terminal spikes staminate for less than 1/2 length, scarcely clavate. Pistillate scales brown with pale green center and narrow hyaline margins, broadly ovate, much shorter than perigynia, apex obtuse. Perigynia appressed-ascending, pale-brown or brown, several-veined, elliptic-obovate, 1.5–2 × 1 mm, widest near middle, membranous; beak short, entire. Achenes yellowbrown, elliptic, 1–1.25 × 0.8 mm, dull to slightly glossy. 2n = 60 (Chukotka Peninsula).


Phenology: Fruiting Jun–Aug.
Habitat: Wet, boggy tundra, mostly lowlands
Elevation: 50–900 m

Distribution

V23 562-distribution-map.jpg

N.W.T., Yukon, Alaska, ne arctic Asia

Discussion

Selected References

None.

Lower Taxa

None.

"widest" is not a number."prolonged" is not a number.

... more about "Carex bonanzensis"
yellowbrown +
0.1 cm1 mm <br />0.001 m <br /> (0.125 cm1.25 mm <br />0.00125 m <br />) +
dull +  and slightly glossy +
biconvex +
smaller +
beaked +  and beakless +
papillose +  and smooth +
Heikki Toivonen +
Britton +
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 />) +
pale +  and bluish green or gray-green +
10 cm100 mm <br />0.1 m <br /> (25 cm250 mm <br />0.25 m <br />) +
v--shaped +
thin;2mm;3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
round +  and trigonous +
20 cm200 mm <br />0.2 m <br /> (50 cm500 mm <br />0.5 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
N.W.T. +, Yukon +, Alaska +  and ne arctic Asia +
50–900 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Wet, boggy tundra, mostly lowlands +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
red tinged +  and hyaline +
sessile +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
angled;rounded +
with (1-)3-6(-30) bristles and/or scales +
brown +  and pale-brown +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
appressed-ascending +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Fruiting Jun–Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
sheathless +  and bristlelike +
Bull. New York Bot. Gard. +
adventitious +
basal +  and proximal +
cylindric +
Illustrated +
gynecandrous +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex cajanderi +
Carex bonanzensis +
Carex sect. Glareosae +
species +
plant +  and cespitose +