Carex atlantica

L. H. Bailey

Bull. Torrey Bot. Club 20: 425. 1893.

IllustratedEndemic
Basionyms: Carex stellulata var. conferta Chapman Fl. South. U.S., 534. 1860,
Treatment appears in FNA Volume 23. Treatment on page 329. Mentioned on page 326, 327, 328, 330.

Culms 10–110 cm. Leaves 3–5 per culm; sheaths tight, inner band hyaline, 3.5–24 cm, apex concave, glabrous; ligules rounded to obtuse, 0.5–3.7 mm; blades plicate, 8–60 cm × 0.4–4 (–4.5) mm, widest leaf 0.8–4 (–4.5) mm wide. Inflorescences 0.8–5.5 cm; spikes 2–8; lateral spikes pistillate often with a few staminate flowers proximally, 3.1–13.1 mm, sessile, staminate portion 10-flowered, to 6.5 mm, pistillate portion 3–40-flowered, 2.5–12 mm; basal 2 spikes 1.5–18 mm apart; terminal spike gynecandrous, 4.8–23.7 mm, staminate portion 2–21-flowered, 1.8–13.5 × 0.8–1.3 mm, pistillate portion 4–38-flowered, 3–11 × 4.4–7.5 mm. Pistillate scales ovate to ± suborbicular, 1.2–2.4 × 1.2–2 mm, apex obtuse to acute. Staminate scales ovatelanceolate to ovate, 1.3–3.5 × 0.8–1.4 mm, base clavate, apex acute to obtuse. Anthers 0.6–1.5 (–1.8) mm. Perigynia spreading to reflexed, green, 6–13-veined abaxially, (0–) 1–12-veined adaxially over achene, broadly ovate to suborbicular, cuneate or concavely tapered from widest point to beak, 1.9–3.8 × (1.3–) 2.1–3 mm, 1.1–1.7 (–1.9) times as long as wide; beak 0.45–1.25 mm, 0.23–0.5 (–0.63) length of body, serrulate, teeth 0.15–0.45 mm. Achenes deltate to rhombic-orbiculate, 1–1.9 × 1–1.7 mm.

Distribution

V23 585-distribution-map.jpg

N.S., Ont., Que., Ala., Ark., Conn., D.C., Del., Fla., Ga., Ill., Ind., Ky., La., Maine, Mass., Md., Mich., Miss., Mo., N.C., N.H., N.J., N.Y., Ohio, Pa., R.I., S.C., Tenn., Tex., Va., Vt., W.Va.

Discussion

Subspecies 2 (2 in the flora).

Selected References

None.

Key

1 Widest leaves 1.6–4(–4.5) mm wide; inflorescences usually (1.5–)1.8–5.5 cm; perigynia 2.3–3.8 mm. Carex atlantica subsp. atlantica
1 Widest leaves (0.65–)0.8–1.6 wide; inflorescences usually 0.8–2 cm; perigynia 1.9–3 mm. Carex atlantica subsp. capillacea
... more about "Carex atlantica"
0.1 cm1 mm <br />0.001 m <br /> (0.19 cm1.9 mm <br />0.0019 m <br />) +
deltate;rhombic-orbiculate +
much smaller +
1mm;1.7mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
A. A. Reznicek +
L. H. Bailey +
shortened +
white-hyaline +, hyaline +  and narrow +
clavate +
Carex stellulata var. conferta +
0.23 length of body;0.5 length of body +
0.045 cm0.45 mm <br />4.5e-4 m <br /> (0.125 cm1.25 mm <br />0.00125 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
8 cm80 mm <br />0.08 m <br /> (60 cm600 mm <br />0.6 m <br />) +
inconspicuous +
v--shaped +
0.4mm;4mm +
2-ranked +  and arranged +
ascending +  and appressed +
scale-like +  and leaflike +
parallel +  and divergent +
terete +, rolled +  and plicate +
0.8mm +  and 5mm +
round +  and trigonous +
10 cm100 mm <br />0.1 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
N.S. +, Ont. +, Que. +, Ala. +, Ark. +, Conn. +, D.C. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Maine +, Mass. +, Md. +, Mich. +, Miss. +, Mo. +, N.C. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +, Vt. +  and W.Va. +
hypogynous +  and subtending +
biconvex +  and trigonous +
0.8 cm8 mm <br />0.008 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
3.5 cm35 mm <br />0.035 m <br /> (24 cm240 mm <br />0.24 m <br />) +
sessile +  and pistillate +
0.31 cm3.1 mm <br />0.0031 m <br /> (1.31 cm13.1 mm <br />0.0131 m <br />) +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
basal +  and cauline +
rounded +  and obtuse +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.37 cm3.7 mm <br />0.0037 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
(0-)1-12-veined +  and 6-13-veined +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
1.1-1.7(-1.9) +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
spreading +  and reflexed +
0.21 cm2.1 mm <br />0.0021 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2-3(-4)-carpellate +
4-38-flowered +, pistillate +, 2-21-flowered +, staminate +, 3-40-flowered +  and 10-flowered +
0.3 cm3 mm <br />0.003 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
3 (?) +  and 1 (?) +
Bull. Torrey Bot. Club +
adventitious +
staminate +  and pistillate +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
basal +  and proximal +
ovatelanceolate;ovate +
0.8mm;1.4mm +
cylindric +
Illustrated +  and Endemic +
0.15 cm1.5 mm <br />0.0015 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
1 (?) +  and 3 (?) +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
deciduous +
2-3(-4)-fid +
Carex atlantica +
Carex sect. Stellulatae +
species +
staminate +  and pistillate +
0.48 cm4.8 mm <br />0.0048 m <br /> (2.37 cm23.7 mm <br />0.0237 m <br />) +
0.015 cm0.15 mm <br />1.5e-4 m <br /> (0.045 cm0.45 mm <br />4.5e-4 m <br />) +
plant +  and cespitose +
0.8mm +  and 4mm +