Carex abscondita

Mackenzie

Bull. Torrey Bot. Club 37: 244. 1910.

IllustratedEndemic
Basionym: Carex ptychocarpa Steudel Syn. Pl. Glumac., 234. 1855,
Treatment appears in FNA Volume 23. Treatment on page 444. Mentioned on page 445, 454, 455, 456.

Plants loosely or densely cespitose. Culms erect or ascending, 7–30 cm × 0.2–0.5 mm; vegetative shoots taller than culms, (1.4–)1.7–3.7(–4.9) times as tall as tallest flowering culm, blades of vegetative shoots 1–3.5 times wider than bract blades Leaves: basal sheaths white to light-brown; nonbasal sheaths 1–4 mm; blades erect, drooping or recurved, dark green to grayish blue-green, 11–38 cm × 3–9 mm, usually exceeding culms. Inflorescences: spikes (3–) 4 per culm, scattered; peduncles of proximal pistillate spikes erect, 3–15 mm; bracts dark green to glaucous, 1–10.5 cm × 1.5–4 mm, well developed, blade of distal lateral spike 5.6–17 (–26) times as long as wide. Pistillate spikes: proximal usually basal, proximal spikes on usually erect peduncles, distal sessile to very short-pedunculate, 6–12 × 3.5–6 mm, often hidden in foliage. Staminate spike sessile or nearly so, (3.5–) 4.5–10.2 (–11.5) × 0.6–1.4 (–1.6) mm, often hidden by distal bract and/or pistillate spikes. Pistillate scales 1.5–2 × 0.8–1 mm, midribs green, margins hyaline, apex acute, proximal scales of lateral spikes subtending perigynia. Staminate scales 2.6–3.6 (–3.8) × 0.8–1 mm, midribs green, margins hyaline, apex obtuse. Anthers 1.2–1.8 mm. Perigynia (3–) 8–13 per spike, spirally overlapping, finely veined, obovoid, 2.8–4.2 × 1.4–2 mm; beak tapering. Achenes ellipsoid, 2.6–4 × 1.2–1.8 mm, sides flat at maturity, filling perigynia. Style short, tapering from swelling just beyond attachment to achene, bent, ascending through entire orifice.


Phenology: Fruiting summer.
Habitat: Rich, moist, wet slopes or bottomlands, deciduous or mixed deciduous-evergreen forests, on or just above flood plain of streams and rivers
Elevation: 0–600 m

Distribution

V23 814-distribution-map.jpg

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Okla., Pa., R.I., S.C., Tenn., Tex., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Carex abscondita"
0.26 cm2.6 mm <br />0.0026 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
ellipsoid +
smaller +
1.2mm;1.8mm +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
Charles T. Bryson +  and Robert F. C. Naczi +
Mackenzie +
shortened +
white;light-brown +
tapering +
Carex ptychocarpa +
tapering +
dark green +  and grayish blue-green +
5.6-17(-26) +
11 cm110 mm <br />0.11 m <br /> (38 cm380 mm <br />0.38 m <br />) +
m--shaped +
3mm;9mm +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
1 cm10 mm <br />0.01 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
ascending +  and appressed +
scale-like +  and leaflike +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
10 cm100 mm <br />0.1 m <br /> (?) +
purple +  and brown +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
ascending +  and erect +
round +  and trigonous +
0.2mm;0.5mm +
short-pedunculate +  and sessile to very +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +  and Va. +
0–600 m +
hypogynous +  and subtending +
1 +  and 2 +
biconvex +  and trigonous +
Rich, moist, wet slopes or bottomlands, deciduous or mixed deciduous-evergreen forests, on or just above flood plain of streams and rivers +
prophyllate +, pedunculate +  and pistillate +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Fruiting summer. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
bladeless +  and leaflike +
Bull. Torrey Bot. Club +
adventitious +
staminate +  and pistillate +
0.36 cm3.6 mm <br />0.0036 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
basal +  and proximal +
2-keeled +
0.8mm;1mm +
cylindric +
Illustrated +  and Endemic +
pistillate +, nearly +, sessile +  and staminate +
1.02 cm10.2 mm <br />0.0102 m <br /> (1.15 cm11.5 mm <br />0.0115 m <br />) +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.02 cm10.2 mm <br />0.0102 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
bent +  and tapering +
swelling +
Carex abscondita +
Carex sect. Careyanae +
species +
plant +  and cespitose +