Carex tompkinsii

J. T. Howell

Leafl. W. Bot. 9: 185. 1961.

IllustratedEndemicConservation concern
Treatment appears in FNA Volume 23. Treatment on page 564. Mentioned on page 563.

Plants not cespitose; short-rhizomatous. Culms 10–40 cm, triangular, scabrous distally Leaves plane, 1.5–3 mm wide, equaling culms. Spike with staminate portion separated from pistillate portion by short but conspicuous internode, with pistillate portion 0–2 branched, 5–23 × 1.3–2.3 mm. Pistillate scales green, proximal foliaceous, long-awned. Staminate scales green to pale-brown, apex obtuse to acute. Anthers 1.9–3 mm. Perigynia 1–5, light green to brownish green, with 2 strong marginal veins, otherwise veinless, 5–6 × 2.5–3 mm.


Phenology: Fruiting late May–late Jun.
Habitat: Dry, open or partly shaded, rocky canyon slopes
Elevation: 1000–1700 m

Discussion

Of conservation concern.

Carex tompkinsii is known to occur only in Fresno County, California. Specific status may not be warranted for this taxon; until a thorough review of its taxonomy has been completed, it seems best to maintain its rank to bring it to the attention of field botanists.

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Carex tompkinsii"
trigonous +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obtuse;acute +
William J. Crins +
J. T. Howell +
tapering +
Carex subsect. Firmiculmes +
v--shaped +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
red brown +  and brown +
triangular +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
1000–1700 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry, open or partly shaded, rocky canyon slopes +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
light green +  and brownish green +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.47 cm4.7 mm <br />0.0047 m <br /> (0.84 cm8.4 mm <br />0.0084 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Fruiting late May–late Jun. +
2-3(-4)-carpellate +
pistillate +  and staminate +
3 (?) +  and 1 (?) +
Leafl. W. Bot. +
adventitious +
staminate +  and pistillate +
green +  and pale-brown +
basal +  and proximal +
2-keeled +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
cylindric +
Illustrated +, Endemic +  and Conservation concern +
0.5 cm5 mm <br />0.005 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.23 cm2.3 mm <br />0.0023 m <br />) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex tompkinsii +
Carex sect. Firmiculmes +
species +
plant +  and not cespitose +