Carex striatula

Michaux

Fl. Bor.-Amer. 2: 173. 1803.

IllustratedEndemic
Treatment appears in FNA Volume 23. Treatment on page 436. Mentioned on page 433, 434, 454.

Culms densely tufted, central or lateral, ascending or slightly decumbent, 45–62 cm × 0.5–1 mm. Leaves: basal sheaths tan or light-brown; sheaths green, sometimes glaucous, 4–88 mm; blades green, sometimes glaucous, midrib and 2 lateral-veins developed, flat or slightly corrugate, 30–46 cm × 3–14 mm, blades of overwintering leaves smooth or, rarely, sparsely papillose abaxially. Inflorescences: peduncles of proximal spikes 0–5 cm, arising from proximal 1/3 of culms, 1.4–3.3 (–5.3) times as long as spikes they subtend; of terminal spikes 0.4–12 cm. Bracts 0.6–14 cm × 0.8–6 mm, bract blades of distal lateral spikes linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide. Spikes 3 (–4) per culm; lateral spikes 22–62 × 3–5 mm; distal lateral spikes separate; terminal spike linear to linear-clavate, 22–32 (–36) × 2–3 mm. Pistillate scales 3.4–5 × 1.2–2.2 mm, apex aristate, apiculate, or acute. Staminate scales oblongovate, 3–5 × 1.2–2 mm, margins hyaline or, occasionally, light-brown, apex obtuse or acute. Anthers 3–3.2 mm. Perigynia 6–18 per spike, scattered to loosely overlapping, ratio of longer lateral spike length to perigynia number 1.9–3.4, ascending, finely, conspicuously (22–) 25–32-veined, elongate, (3.4–) 3.9–5.1 × 1.2–2 mm; beak straight or slightly curved, 0.6–1.7 mm. Achenes elongate-obovoid, 2.2–2.8 (–4.6) × 1–1.8 mm. 2n = 36, 40.


Phenology: Fruiting spring.
Habitat: Dry to moist ravine slopes, deciduous or mixed deciduous-evergreen forests
Elevation: 0–600 m

Distribution

V23 799-distribution-map.jpg

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ky., La., Md., Miss., N.J., N.Y., N.C., Pa., S.C., Tenn., Tex., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number."-3.3(-5.3)timesaslongasspikes" is not declared as a valid unit of measurement for this property.

... more about "Carex striatula"
0.28 cm2.8 mm <br />0.0028 m <br /> (0.46 cm4.6 mm <br />0.0046 m <br />) +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
elongate-obovoid +
1mm;1.8mm +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
acute;obtuse;acute;apiculate;acute;apiculate;aristate +
Charles T. Bryson +  and Robert F. C. Naczi +
Michaux +
light-brown;tan +
tapering +
Laxiflorae +
curved +  and straight +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
papillose +
m--shaped +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (14 cm140 mm <br />0.14 m <br />) +
ascending +  and appressed +
scale-like +  and leaflike +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
purple +  and brown +
45 cm450 mm <br />0.45 m <br /> (62 cm620 mm <br />0.62 m <br />) +
decumbent +  and ascending +
lateral +  and central +
round +  and trigonous +
0.5mm;1mm +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Miss. +, N.J. +, N.Y. +, N.C. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
0–600 m +
open +, pistillate +  and staminate +
hypogynous +  and subtending +
biconvex +  and trigonous +
Dry to moist ravine slopes, deciduous or mixed deciduous-evergreen forests +
30 cm300 mm <br />0.3 m <br /> (46 cm460 mm <br />0.46 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
prophyllate +, pedunculate +  and pistillate +
2.2 cm22 mm <br />0.022 m <br /> (6.2 cm62 mm <br />0.062 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
overwintering +
basal +  and cauline +
light-brown +, , +  and hyaline +
0 cm0 mm <br />0 m <br /> (5 cm50 mm <br />0.05 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
(22-)25-32-veined +
scattered +  and loosely overlapping +
0.34 cm3.4 mm <br />0.0034 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
not black-mottled +, yellowbrown +  and dark-brown +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.51 cm5.1 mm <br />0.0051 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Fruiting spring. +
2-3(-4)-carpellate +
3 (?) +  and 1 (?) +
long-sheathing +  and leaflike +
awned +  and acute +
Fl. Bor.-Amer. +
adventitious +
staminate +  and pistillate +
basal +  and proximal +
2-keeled +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
cylindric +
0.4 cm4 mm <br />0.004 m <br /> (8.8 cm88 mm <br />0.088 m <br />) +
Illustrated +  and Endemic +
0.4 cm4 mm <br />0.004 m <br /> (12 cm120 mm <br />0.12 m <br />) +
1 +  and 3 +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex striatula +
Carex sect. Laxiflorae +
species +
3.2 cm32 mm <br />0.032 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
linear +  and linear-clavate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
plant +  and cespitose +