Carex congdonii

L. H. Bailey

Bot. Gaz. 21: 6. 1896.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 495. Mentioned on page 491, 492.

Plants cespitose; rhizomes short. Culms central, trigonous, 30–90 cm, smooth. Leaves: basal sheaths reddish purple-tinged; ligules 6–17 mm; blades green, M-shaped, 3–8 mm wide, pubescent abaxially and on apex of inner band of distalmost sheaths, glabrous or nearly so adaxially, especially distally. Inflorescences 7–20 cm; proximal 2–4 spikes pistillate, ascending; distal spikes erect; terminal 1–2 spikes staminate. Pistillate scales ovate, apex acute, pubescent abaxially, ciliate. Perigynia ascending, purplish tinged distally, ± veinless except for 2 main ribs, ovoid, 3–4 × 1.2–1.8 mm, pubescent; beak 0.3–0.8 mm, ± irregularly bidentulate or erose, hyaline, ciliate.


Phenology: Fruiting Jul.
Habitat: Open alpine and subalpine screes
Elevation: 2600–3900 m

Discussion

Carex congdonii is sometimes submerged into C. sartwelliana, but in addition to the differences noted in the key and its different habitat, the pistillate scales of the species are usually shorter than the perigynia, exposing the distal purple portion and thus giving the spike a distinctive, dark cast.

Selected References

None.

Lower Taxa

None.

"lengthofbody" is not declared as a valid unit of measurement for this property.

... more about "Carex congdonii"
trigonous +
smaller +
A. A. Reznicek +  and Paul M. Catling +
L. H. Bailey +
shortened +
reddish purple-tinged +
rounded +
erose +  and bidentulate +
straight +
emarginate +  and bidentate +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
nearly +, glabrous +  and pubescent +
m--shaped +
3mm;8mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
involute +  and channeled +
red tinged +
trigonous +
30 cm300 mm <br />0.3 m <br /> (90 cm900 mm <br />0.9 m <br />) +
with awn +  and acuminate +
2600–3900 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Open alpine and subalpine screes +
7 cm70 mm <br />0.07 m <br /> (20 cm200 mm <br />0.2 m <br />) +
staminate +, prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
pubescent;,;glabrous +
septate-nodulose +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
purplish tinged +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Fruiting Jul. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
adventitious +
basal +  and proximal +
ladder-fibrillose +
shorter or longer +
septate-nodulose +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +  and Endemic +
staminate +  and pistillate +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
Carex congdonii +
Carex sect. Paludosae +
species +
plant +  and cespitose +