Cyperus ovatus

Baldwin

Trans. Amer. Philos. Soc., n. s. 2: 168. 1825.

IllustratedEndemic
Synonyms: Cyperus cylindricus Chapman Cyperus deeringianus Britton & Small Cyperus litoreus (C. B. Clarke) Britton Cyperus pollardii Britton Cyperus retrorsus var. curtisii (C. B. Clarke) Kükenthal Cyperus retrorsus var. deeringianus (Britton & Small) Fernald & Griscom Cyperus winkleri C. B. Clarke Mariscus curtisii C. B. Clarke Mariscus litoreus
Treatment appears in FNA Volume 23. Treatment on page 183. Mentioned on page 149.

Herbs, perennial, cespitose, (15–) 30–100 cm. Culms not basally cormlike, trigonous, (15–) 30–100 cm × 1–3 mm, glabrous. Leaves V-shaped, 10–65 cm × 2–4 mm. Inflorescences: spikes densely ovoid to cylindric, 8–17 mm wide; rays 1–6, 2–10 cm, glabrous; rachis 4–8 mm; bracts 3–9, ± horizontal, flat, 4–20 cm × 2–4 mm; rachilla persistent, wings deciduous, 0.2 (–0.3) mm wide. Spikelets 30–80, oblong-lanceoloid, ± terete-quadrangular, 4–7 × 1.5–2 mm; distal spikelet spreading or ascending; floral scales persistent, 4–6, appressed, stramineous, laterally 3-ribbed, oblongelliptic, 1.9–2.6 × 1.1–1.5 mm. Flowers: anthers 0.3–0.5 mm; styles 0.5 mm; stigmas 1–2 mm. Achenes brown, ± stipitate, oblong-fusiform, 1.2–1.5 × 0.4–0.6 mm, apex ± acute, surfaces puncticulate.


Phenology: Fruiting spring–summer.
Habitat: Sandy soils of beaches, coastal woods
Elevation: 0–100 m

Distribution

V23 314-distribution-map.jpg

Ala., Fla., Ga., Miss., N.C., S.C.

Discussion

Selected References

None.

Lower Taxa

None.

"shortened" is not a number.

... more about "Cyperus ovatus"
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
oblong-fusiform +
0.4mm;0.6mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Baldwin +
persistent +  and deciduous +
decurrent +
w--shaped +  and keeled +
glumaceous +  and foliaceous +
2-ranked +  and arranged +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
parallel +  and divergent +
terete +, rolled +  and plicate +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
scabridulous +
trigonous +
1mm;3mm +
ascending +  and spreading +
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +  and S.C. +
0–100 m +
0.19 cm1.9 mm <br />0.0019 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
oblongelliptic +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
hypogynous +  and subtending +
biconvex +  and trigonous +
Sandy soils of beaches, coastal woods +
subumbellate +  and capitate +
spreading +  and erect +
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
10 cm100 mm <br />0.1 m <br /> (?) +  and 65 cm650 mm <br />0.65 m <br /> (?) +
v--shaped +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
with (1-)3-6(-30) bristles and/or scales +
Fruiting spring–summer. +
2-3(-4)-carpellate +
antrorse +  and extrorse +
3 (?) +  and 1 (?) +
Trans. Amer. Philos. Soc., n. s. +
continuous +, articulate +, winged +  and wingless +
conspicuous +
unequal +
1 +  and 6 +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
adventitious +
basal +  and proximal +
cylindric;compressed +
cylindric +
Illustrated +  and Endemic +
densely ovoid;cylindric +
0.8 cm8 mm <br />0.008 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
30 +  and 80 +
terete-quadrangular;oblong-lanceoloid +
1.5mm;2mm +
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 +
0.5 cm5 mm <br />0.005 m <br /> (?) +
Cyperus cylindricus +, Cyperus deeringianus +, Cyperus litoreus +, Cyperus pollardii +, Cyperus retrorsus var. curtisii +, Cyperus retrorsus var. deeringianus +, Cyperus winkleri +, Mariscus curtisii +  and Mariscus litoreus +
Cyperus ovatus +
Cyperus subg. Cyperus +
species +
tuberous +, stoloniferous +  and rhizomatous +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
herb +  and cespitose +
deciduous +
0.2 +, 0.2mm +  and 0.3mm +