Carex laeviculmis

Meinshausen

Bot. Centralbl. 55: 195. 1893.

IllustratedEndemic
Synonyms: Carex deweyana var. sparsiflora L. H. Bailey
Treatment appears in FNA Volume 23. Treatment on page 322. Mentioned on page 323.

Plants densely cespitose. Culms 14–66 cm × 0.4–1 mm, smooth or scabriduous. Leaves: ligules 2.7–6.9 mm, 2.5–6 times as long as wide; blades 0.9–2.3 mm wide, widest blade 1.3–2 (–2.3) mm wide. Inflorescences 16–58 (–87) mm; proximal internode 5.7–32 (–46) mm; proximal bracts 3.8–18 (–34) mm, awn 0.4–15 (–31) mm; spikes 4–6 (–7), usually gynecandrous, sometimes pistillate; lateral spikes with 0–5 staminate and 8–18 pistillate flowers, longest proximal spike 5.5–9.8 × 4–5.6 mm; terminal spikes usually with 2–9 staminate and 4–18 pistillate flowers, 6.2–13 × 2.9–6.8 mm. Pistillate scales with margins ferruginous to castaneous or occasionally stramineous, 2–2.7 × 1.4–1.7 mm, apex acute. Staminate scales with margins ferruginous to castaneous or occasionally stramineous, 2.5–3.6 × 1.5–1.8 mm, apex acute. Anthers 1.1–1.4 mm. Perigynia ascending to spreading or occasionally recurved, green to brown and often ferruginous tinged apically, prominently to weakly 3–8-veined adaxially, 7–14-veined abaxially, ovate to narrowly ovate, 2.3–3.7 × 1.1–1.5 mm, 1.8–2.5 (–3) times as long as wide, apex abruptly contracted or gradually tapering; beak 0.4–1.1 (–1.3) mm, 0.15–0.33 (–0.38) times as long as perigynia, margins sparsely serrulate or entire, apex entire or bidentulate with teeth to 0.1 mm, teeth 0–0.03 times as long as perigyina. Stigmas 0.8–1.4 mm. Achenes 1.3–2 × 0.9–1.2 mm, 1.4–1.7 times as long as wide. 2n = 56.


Phenology: Fruiting summer.
Habitat: Forested seeps along streams, swampy forests, wet meadows, occasionally marshes and bogs
Elevation: 10–2100 m

Distribution

V23 569-distribution-map.jpg

B.C., Alaska, Calif., Idaho, Mont., Oreg., Wash., Wyo.

Discussion

Carex laeviculmis is divergent from the rest of the members of Carex sect. Deweyanae and may not belong to this section. Compared to the other taxa in the section, C. laeviculmis has shorter, more spreading perigynia, with lower length to width ratios and shorter beaks. In this flora, placement of C. laeviculmis in Carex sect. Deweyanae follows the recommendation of A. A. Reznicek and P. W. Ball (1980), although K. K. Mackenzie’s (1931–1935, parts 2–3, pp. 99–114) placement of this species in Carex sect. Stellulatae may be correct.

Reports of Carex laeviculmis from Colorado appear to be based on misidentifications.

Selected References

None.

Lower Taxa

None.

"-0.03timesaslongasperigyina" is not declared as a valid unit of measurement for this property.

... more about "Carex laeviculmis"
0.13 cm1.3 mm <br />0.0013 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
planoconvex;biconvex +
0.9mm;1.2mm +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
bidentulate +  and entire +
Robert F. C. Naczi +
Meinshausen +
1.5 cm15 mm <br />0.015 m <br /> (3.1 cm31 mm <br />0.031 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
shortened +
cuneate +  and rounded +
Deweyanae +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.15-0.33(-0.38) times as long as perigynia +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
v--shaped +  and flat +
0.9mm;2.3mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
green;hyaline +
14 cm140 mm <br />0.14 m <br /> (66 cm660 mm <br />0.66 m <br />) +
round +  and trigonous +
0.4mm;1mm +
B.C. +, Alaska +, Calif. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
10–2100 m +
pistillate +  and staminate +
hypogynous +  and subtending +
4 +  and 18 +
biconvex +  and trigonous +
Forested seeps along streams, swampy forests, wet meadows, occasionally marshes and bogs +
5.8 cm58 mm <br />0.058 m <br /> (8.7 cm87 mm <br />0.087 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
sessile +, staminate +  and pistillate +
androgynous +  and gynecandrous +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.69 cm6.9 mm <br />0.0069 m <br />) +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.98 cm9.8 mm <br />0.0098 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.56 cm5.6 mm <br />0.0056 m <br />) +
entire +  and serrulate +
ferruginous +  and castaneous or occasionally stramineous +
with (1-)3-6(-30) bristles and/or scales +
7-14-veined +  and 3-8-veined +
green +  and brown and often ferruginous tinged +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
ascending +  and spreading or occasionally recurved +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
1.8 cm18 mm <br />0.018 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
0.38 cm3.8 mm <br />0.0038 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.57 cm5.7 mm <br />0.0057 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
Bot. Centralbl. +
adventitious +
staminate +  and pistillate +
whitish +  and castaneous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
basal +  and proximal +
2-keeled +
1.5mm;1.8mm +
cylindric +
Illustrated +  and Endemic +
gynecandrous +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
deciduous +
2-3(-4)-fid +
enlarged +
Carex deweyana var. sparsiflora +
Carex laeviculmis +
Carex sect. Deweyanae +
species +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.68 cm6.8 mm <br />0.0068 m <br />) +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
plant +  and cespitose +
1.3mm +  and 2mm +