familyCyperaceae
genusCyperus
subgenusCyperus subg. Cyperus
speciesCyperus ovatus

Cyperus ovatus

Baldwin

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

Gordon C. Tucker*, Brian G. Marcks*, J. Richard Carter *
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.
Please click on the illustration for a higher resolution version.
Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

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"
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Achene architecture
stipitate +
Achene coloration
brown +
Achene length
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Achene life cycle
mature +
Achene shape
oblong-fusiform +
Achene width
0.4mm;0.6mm +
Anther fixation
basifixed +
Anther some measurement
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Apex shape
acute +
Author
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Authority
Baldwin +
Base duration
persistent +  and deciduous +
Base shape
decurrent +
Blade presence
absent +
Blade prominence or shape
flat +
Blade shape
w--shaped +  and keeled +
Bract architecture
glumaceous +  and foliaceous +
Bract arrangement
2-ranked +  and arranged +
Bract length
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Bract orientation
horizontal +
Bract prominence or shape
flat +
Bract quantity
3;9 +
Bract width
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Branch atypical quantity
3 (4) +
Branch quantity
2;3 +
Bristle atypical quantity
6;30 +
Bristle quantity
3;6 +
Cauline leaf architecture or shape
folded +
Cauline leaf arrangement
parallel +  and divergent +
Cauline leaf arrangement or course or shape
linear +
Cauline leaf orientation
Ascending (?) +
Cauline leaf prominence or shape
flat +
Cauline leaf shape
terete +, rolled +  and plicate +
Culm architecture or arrangement or growth form
not +  and solitary +
Culm architecture or shape
cormlike +
Culm atypical length
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Culm length
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
Culm pubescence
glabrous +
Culm relief
scabridulous +
Culm shape
trigonous +
Culm width
1mm;3mm +
Distal scale architecture
empty +
Distal spikelet orientation
ascending +  and spreading +
Distribution
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +  and S.C. +
Elevation
0–100 m +
Embryo position
basal +
Endosperm quantity
abundant +
Floral scale architecture or shape
3-ribbed +
Floral scale arrangement
distichous +
Floral scale coloration
stramineous +
Floral scale duration
persistent +
Floral scale fixation or orientation
appressed +
Floral scale length
0.19 cm1.9 mm <br />0.0019 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
Floral scale quantity
4 (6) +
Floral scale shape
oblongelliptic +
Floral scale width
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Flower position
hypogynous +  and subtending +
Flower quantity
single +
Flower reproduction
bisexual +
Fruits achene shape
biconvex +  and trigonous +
Habitat
Sandy soils of beaches, coastal woods +
Illustration
Present +
Illustration copyright
Flora of North America Association +
Illustrator
Yevonn Wilson-Ramsey +
Inflorescence architecture
subumbellate +  and capitate +
Inflorescence position
pseudolateral +
Inflorescence position or structure subtype
terminal +
Inflorescences panicle architecture
pseudoumbel +
Inflorescences panicle development
modified +
Involucral-bract architecture or shape
leaflike +
Involucral-bract arrangement
arranged +
Involucral-bract orientation
spreading +  and erect +
Involucral-bract quantity
1;22 +
Leaf arrangement
multi-ranked +, 2-ranked +, 3-ranked +  and alternate +
Leaf length
10 cm100 mm <br />0.1 m <br /> (?) +  and 65 cm650 mm <br />0.65 m <br /> (?) +
Leaf position
basal +
Leaf shape
v--shaped +
Leaf width
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ligule presence
absent +
Locule quantity
1 +
Margin fusion
fused +
Number of lower taxa
0 +
Perianth life cycle
falling +
Perianth presence
absent +
Perianth quantity
with (1-)3-6(-30) bristles and/or scales +
Pericarp width
thin +
Phenology
Fruiting spring–summer. +
Pistil architecture
2-3(-4)-carpellate +
Pistil fusion
fused +
Pistil quantity
1 +
Prickle orientation
antrorse +  and extrorse +
Prophyll architecture
pistillate +
Prophyll atypical quantity
0 (3) +
Prophyll position
subtending +
Prophyll quantity
3 (?) +  and 1 (?) +
Publication title
Trans. Amer. Philos. Soc., n. s. +
Publication year
1825 +
Rachillum architecture
continuous +, articulate +, winged +  and wingless +
Rachillum duration
persistent +
Rachillum life cycle
falling +
Rachis prominence
conspicuous +
Rachis some measurement
4mm;8mm +
Ray arrangement
singly +
Ray length
unequal +
Ray pubescence
glabrous +
Ray quantity
1 +  and 6 +
Ray some measurement
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Reference
None +
Root derivation
adventitious +
Root texture
fibrous +
Scale architecture
empty +
Scale arrangement
distichous +
Scale atypical quantity
6 (30) +
Scale position
basal +  and proximal +
Scale quantity
0;76 +
Scale reproduction
fertile +
Scale shape
cylindric;compressed +
Seed quantity
1 +
Sheath shape
cylindric +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V23/V23 314.xml +
Special status
Illustrated +  and Endemic +
Spike architecture or fragility
loose +
Spike density
dense +
Spike quantity
single +
Spike shape
densely ovoid;cylindric +
Spike width
0.8 cm8 mm <br />0.008 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
Spikelet architecture
spicate +
Spikelet architecture or arrangement or growth form
solitary +
Spikelet arrangement
arranged +
Spikelet length
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Spikelet life cycle
falling +
Spikelet quantity
30 +  and 80 +
Spikelet shape
terete-quadrangular;oblong-lanceoloid +
Spikelet width
1.5mm;2mm +
Stamen atypical quantity
1 (3) +
Stamen fusion
distinct +
Stamen quantity
3 +
Stem architecture
septate +, hollow +  and solid +
Stem shape
compressed +, terete +  and trigonous +
Stigma quantity
3 +
Stigma relief
papillate +
Stigma some measurement
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Style architecture or shape
undivided +
Style arrangement or course or shape
linear +
Style shape
2-3-fid +
Style some measurement
0.5 cm5 mm <br />0.005 m <br /> (?) +
Surface coloration or relief
puncticulate +
Synonyms
Cyperus cylindricus +, Cyperus deeringianus +, Cyperus litoreus +, Cyperus pollardii +, Cyperus retrorsus var. curtisii +, Cyperus retrorsus var. deeringianus +, Cyperus winkleri +, Mariscus curtisii +  and Mariscus litoreus +
Taxon family
Cyperaceae +
Taxon name
Cyperus ovatus +
Taxon parent
Cyperus subg. Cyperus +
Taxon rank
species +
Testa fusion
free +
Testa width
thin +
Volume
Volume 23 +
Whole organism architecture
tuberous +, stoloniferous +  and rhizomatous +
Whole organism atypical some measurement
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Whole organism duration
perennial +
Whole organism growth form
herb +  and cespitose +
Whole organism some measurement
30cm (100cm) +
Wing coloration
hyaline +
Wing duration
deciduous +
Wing width
0.2 +, 0.2mm +  and 0.3mm +
X chromosome quantity
5;100 +