Carex pumila

Thunberg in A. Murray

in A. Murray, Syst. Veg. ed. 14, 846. 1784.

Treatment appears in FNA Volume 23. Treatment on page 495. Mentioned on page 491, 493.

Plants colonial; rhizomes long-creeping. Culms central, slender, trigonous, 8–30 cm, smooth. Leaves: basal sheaths persistent, straw colored to dark-brown, the youngest sometimes tinged reddish purple; ligules 0.2–1.3 mm, wider than long; blades somewhat glaucous, M-shaped, 1.5–3.3 mm wide, coriaceous, glabrous. Inflorescences 2.5–19 cm; rachis beyond proximal pistillate spike rounded-angled, smooth; proximal 1–3 (–4) spikes pistillate, strongly overlapping, ascending to spreading; distal spikes erect; terminal 1–3 spikes staminate. Pistillate scales lanceolate to ovate, apex acute to acuminate-awned, scabrous-margined apically, glabrous. Perigynia ascending, ± distinctly 8–20-veined near base, thick-walled and corky, broadly ovoid, 4.5–8 × 2–3.5 mm, glabrous; beak 0.8–1.6 (–2) mm, bidentulate, teeth straight, 0.2–0.7 (–1) mm. 2n = 82.


Phenology: Fruiting May–Jun.
Habitat: Sand dunes, sandy disturbed sites near the coast
Elevation: 0–20 m

Distribution

V23 918-distribution-map.jpg

Introduced; N.C., Oreg., South America, Asia

Discussion

Carex pumila is a rare introduction from eastern Asia, first discovered in the flora in 1906, near Portland, Oregon, and collected there over the next decade. In 1959, it was found in coastal North Carolina and is still extant there (A. A. Reznicek 1993).

Selected References

None.

Lower Taxa

None.

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

... more about "Carex pumila"
trigonous +
smaller +
scabrous-margined +
A. A. Reznicek +  and Paul M. Catling +
Thunberg in A. Murray +
shortened +
tinged reddish;straw colored;dark-brown +
rounded +
bidentulate +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
straight +
emarginate +  and bidentate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
glabrous +  and glaucous +
m--shaped +
1.5mm;3.3mm +
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 +
slender +
8 cm80 mm <br />0.08 m <br /> (30 cm300 mm <br />0.3 m <br />) +
with awn +  and acuminate +
N.C. +, Oreg. +, South America +  and Asia +
0–20 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sand dunes, sandy disturbed sites near the coast +
2.5 cm25 mm <br />0.025 m <br /> (19 cm190 mm <br />0.19 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 />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
wider than long +
with (1-)3-6(-30) bristles and/or scales +
thick-walled +  and 8-20-veined +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Fruiting May–Jun. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
in A. Murray, Syst. Veg. ed. +
adventitious +
basal +  and proximal +
lanceolate;ovate +
ladder-fibrillose +
shorter or longer +
septate-nodulose +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
staminate +  and pistillate +
overlapping +
ascending +  and spreading +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +  and persistent +
2-3(-4)-fid +
Carex pumila +
Carex sect. Paludosae +
species +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
straight +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
plant +  and colonial +