Cyperus grayi

Torrey

Ann. Lyceum Nat. Hist. New York 3: 268. 1836.

Common names: Gray’s sedge
IllustratedEndemic
Synonyms: Cyperus filiculmis var. grayi (Torrey) Boeckeler Cyperus filiculmis var. oblitus Fernald & Griscom
Treatment appears in FNA Volume 23. Treatment on page 179. Mentioned on page 144, 146, 178.

Herbs, perennial, cespitose, rhizomatous. Culms basally cormlike, trigonous, 5–40 cm × 0.5–1.3 mm, glabrous. Leaves V-shaped, 5–25 cm × 1–3 mm, slightly minutely scabridulous abaxially on margins, midrib. Inflorescences: spikes loosely ± globose, 6–20 mm wide; rays 1–8 cm; rachis 1–4 mm; bracts 3–8, ascending, V-shaped, 3–20 cm × 1–3 mm; rachilla deciduous, wings hyaline, 0.6 mm wide. Spikelets 3–18 (–28), oblong-lanceoloid, compressed, 3–12 × 1.8–2.5 mm; floral scales deciduous, 2–11, yellowish-brown to reddish-brown, laterally 3–4-ribbed, ovate, 2–2.8 × 1.6–2.2 mm, apex mucronulate. Flowers: anthers 0.7–1 mm; styles 0.4–0.6 mm; stigmas 1–2 mm. Achenes dark-brown, ± stipitate, ellipsoid, 1.5–2 × 0.7–1 mm, apex obtuse, apiculate surfaces glabrous or puncticulate. 2n = 166.


Phenology: Fruiting summer.
Habitat: Coastal dunes, well-drained woods, railroad yards
Elevation: 0–200 m

Distribution

V23 302-distribution-map.jpg

Conn., Del., Ga., Md., Mass., N.H., N.J., N.Y., N.C., Pa., R.I., S.C., Va.

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Cyperus grayi"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
ellipsoid +
0.7mm;1mm +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
obtuse;mucronulate +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Torrey +
persistent +  and deciduous +
decurrent +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
3 cm30 mm <br />0.03 m <br /> (20 cm200 mm <br />0.2 m <br />) +
v--shaped +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
Gray’s sedge +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
scabridulous +
trigonous +
0.5mm;1.3mm +
Conn. +, Del. +, Ga. +, Md. +, Mass. +, N.H. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, S.C. +  and Va. +
0–200 m +
yellowish-brown +  and reddish-brown +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Coastal dunes, well-drained woods, railroad yards +
subumbellate +  and capitate +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
5 cm50 mm <br />0.05 m <br /> (?) +  and 25 cm250 mm <br />0.25 m <br /> (?) +
scabridulous +
v--shaped +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
Ann. Lyceum Nat. Hist. New York +
continuous +, articulate +, winged +  and wingless +
conspicuous +
unequal +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +  and Endemic +
globose +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
3 +  and 18 +
compressed;oblong-lanceoloid +
1.8mm;2.5mm +
septate +, hollow +  and solid +
compressed +, terete +  and trigonous +
papillate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2-3-fid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Cyperus filiculmis var. grayi +  and Cyperus filiculmis var. oblitus +
Cyperus grayi +
Cyperus subg. Cyperus +
species +
herb +  and cespitose +