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.

"-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 />) +
Charles T. Bryson +  and Robert F. C. Naczi +
Michaux +
shortened +
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 +
0mm;20mm +
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 +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
basal +  and proximal +
2-keeled +
1.2mm;2mm +
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 +