Carex curatorum

Stacey

Leafl. W. Bot. 2: 13. 1937.

IllustratedEndemicConservation concern
Synonyms: Carex scirpoidea var. curatorum (Stacey) Cronquist Carex haysii S. C. Welsh
Treatment appears in FNA Volume 23. Mentioned on page 552.

Plants cespitose; rhizomes rarely conspicuous. Culms erect, (23–) 35–91 cm. Leaves: sheaths and bases from previous year’s leaves absent; ligules acute; blades sparsely pilose adaxially, especially along median adaxial groove and veins. Inflorescences unispicate (occasionally with 1–2 short lateral spikes of same sex), erect, ellipsoid; primary inflorescence bracts leaflike, as long as or longer than inflorescences. Scales redbrown, oblong-lanceolate, to 3.5 × 1.9 mm, shorter than or equaling perigynia, margins hyaline, broad, central midrib extending to scale apex, apex acute. Perigynia tawny to redbrown, obovate to ovate, 2–3 (–4) × 1.5–1.8 mm, often wider than subtending scale, apex tapering or rounded, distal 3/4 hirsute; beak to 0.5 mm, orifice adaxially oblique; rachilla often present. Achenes 1.2–2 × 0.8–1.2 mm, loosely enveloped by perigynia, occupying 1/3–2/3 width and 1/3–3/4 length of perigynia. 2n = 62.


Phenology: Fruiting May–Jul.
Habitat: Riparian or hanging garden communities
Elevation: 900–1300 m

Discussion

Of conservation concern.

Carex curatorum is distinguished from C. scirpoidea by its longer leaves, sparsely pilose adaxial leaf surfaces, achenes that are not tightly enveloped by the perigynia, and subtending scales that are light in color and narrower than the perigynia. Upon maturity the perigynia with achenes disarticulate from the spikes and are readily dispersed, unlike C. scirpoidea, which retain perigynia with achenes until the next growing season.

Selected References

None.

Lower Taxa

None.

No values specified.

... more about "Carex curatorum"
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
trigonous +
smaller +
0.8mm;1.2mm +
Debra A. Dunlop +
Stacey +
shortened +
not +  and fibrous +
rounded +  and tapering +
Scirpinae +
bidentate +  and emarginate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
v--shaped +
0mm;20mm +
prophyllate +  and sheathless +
2-ranked +  and arranged +
ascending +  and appressed +
filiform +
parallel +  and divergent +
terete +, rolled +  and plicate +
puberulent +  and glabrous +
round +  and trigonous +
35 cm350 mm <br />0.35 m <br /> (91 cm910 mm <br />0.91 m <br />) +
Ariz. +  and Utah. +
900–1300 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Riparian or hanging garden communities +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
with (1-)3-6(-30) bristles and/or scales +
stipitate +, veined +  and veinless +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
tawny +  and redbrown +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Fruiting May–Jul. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
Leafl. W. Bot. +
adventitious +
0 cm0 mm <br />0 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
basal +  and proximal +
oblong-lanceolate +
0mm;1.9mm +
persistent +
cylindric +
Illustrated +, Endemic +  and Conservation concern +
pistillate +  and staminate +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex scirpoidea var. curatorum +  and Carex haysii +
Carex curatorum +
Carex sect. Scirpinae +
species +
0 cm0 mm <br />0 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
plant +  and cespitose +