Carex lenticularis var. impressa

(L. H. Bailey) L. A. Standley

Syst. Bot. Monogr. 7: 65. 1985.

IllustratedEndemic
Basionym: Carex interrupta var. impressa L. H. Bailey Mem. Torrey Bot. Club 1: 18. 1889
Synonyms: Carex limnaea T. Holm Carex paucicostata Mackenzie
Treatment appears in FNA Volume 23. Treatment on page 392. Mentioned on page 389, 391.

Culms 15–60 cm. Leaf-blades 2–3.5 mm wide. Inflorescences: peduncle of proximal spike 1 cm; proximal bract redbrown at base, 1–3 mm wide. Spikes: proximal 3–5 spikes pistillate, 1.5–3.6 cm × 3–4 mm; terminal spike staminate. Pistillate scales redbrown or black. Perigynia with purple-brown spots on apical 1/2, 1–3 veins abaxially, ellipsoid or ovoid, 1.8–2.5 × 1.1–1.5 mm; stipe 0.2 mm; beak redbrown, 0.2–0.5 mm. 2n = 92.


Phenology: Fruiting Aug.
Habitat: Seasonally flooded river and lakeshores
Elevation: 1200–3000 m

Distribution

V23 697-distribution-map.jpg

Calif., Idaho, Oreg., Wash.

Discussion

Primarily a taxon of the Sierra Nevada and southern Cascade Mountains, Carex lenticularis var. impressa tends to have smaller perigynia with fewer veins and more red-brown pigmentation than does the more widespread var. lipocarpa.

Selected References

None.

Lower Taxa

None.

"prolonged" is not a number.

biconvex +
not constricted +
, +  and papillose +
purple-brown spots +
Lisa A. Standley +, Jacques Cayouette +  and Leo Bruederle +
(L. H. Bailey) L. A. Standley +
shortened +
not +  and fibrous +
distended +, attenuate +  and cuneate +
Carex interrupta var. impressa +
bidentate +  and emarginate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
papillose +
m--shaped +  and v--shaped +
0mm;20mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
redbrown +  and brown +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
prophyllate +, subsessile +, pedunculate +  and staminate +
Calif. +, Idaho +, Oreg. +  and Wash. +
1200–3000 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Seasonally flooded river and lakeshores +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
1 cm10 mm <br />0.01 m <br /> (?) +
with (1-)3-6(-30) bristles and/or scales +
thin-walled +  and veined +
Fruiting Aug. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
short-sheathing +, sheathless +  and leaflike +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Syst. Bot. Monogr. +
adventitious +
black +  and redbrown +
basal +  and proximal +
2-keeled +
ladder-fibrillose +  and veined +
cylindric +
Illustrated +  and Endemic +
1.5 cm15 mm <br />0.015 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.2 cm2 mm <br />0.002 m <br /> (?) +
deciduous +
2-3(-4)-fid +
Carex limnaea +  and Carex paucicostata +
Carex lenticularis var. impressa +
Carex lenticularis +
variety +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1.1mm +  and 1.5mm +
plant +  and cespitose +