Difference between revisions of "Cyperus prolixus"

Kunth in A. von Humboldt et al.

in A. von Humboldt et al., Nov. Gen. Sp. 1: 206. 1816.

Synonyms: Cyperus amplissimus Steudel
Treatment appears in FNA Volume 23. Treatment on page 167. Mentioned on page 146, 168.
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|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Cyperus;Cyperus prolixus
 
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name=Cyperus prolixus
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_271.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_271.xml
 
|genus=Cyperus
 
|genus=Cyperus
 
|subgenus=Cyperus subg. Cyperus
 
|subgenus=Cyperus subg. Cyperus

Revision as of 20:06, 16 December 2019

Herbs, perennial; rhizomes 3–20 cm × 1–2 cm, indurate. Culms stoutly trigonous, thickened, 50–300 cm × 5–30 mm, basally indurate, glabrous. Leaves V-shaped, with cross ribs, 40–130 cm × 10–15 mm, margins and keel scabrid. Inflorescences: spikes appressed-ascending, narrowly cylindric, (2–)3–45 mm × (4–)7–10 mm; rays (5–)9–12, 2–22(–30) cm; 2d order rays distinctly flattened, 1–10 cm; 3d order rays flattened, 0.5–3 cm; rachis 2.5–4 cm; bracts (6–)9–10, ascending at 45–75°, V- or inversely W-shaped, (5–)15–90 cm × 0.5–20 mm; rachilla persistent, wings 0.2–0.4 mm wide. Spikelets (4–)10–35, appressed-ascending, compressed, linear, 7–12(–15) × 0.6–1.2 mm; floral scales deciduous, 6–20, marginally clear, laterally brown, medially green, laterally 2–3-ribbed, medially 1-ribbed, oblong-ovate, (3.2–) 3.8–4.3 × 1.2–1.7 mm, apex spreading, acute to obtuse, mucronulate. Flowers: anthers 0.7–0.9 mm, connective apex bright red, oblong, to 0.1 mm; styles 0.8–1.3 mm; stigmas 2–3.3 mm. Achenes brown, sessile, narrowly ellipsoid, 1.8–2.5 × 0.8–1.3 mm, apex ± acute, not apiculate, surfaces puncticulate.


Phenology: Fruiting summer.
Habitat: Coastal marshes
Elevation: 0–10 m

Distribution

V23 271-distribution-map.jpg

La., Mexico, Central America, South America.

Discussion

Cyperus prolixus produces large plants, similar in habit to C. giganteus and C. papyrus but easily distinguished by flattened rays.

Selected References

None.

Lower Taxa

None.
... more about "Cyperus prolixus"
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
Kunth in A. von Humboldt et al. +
La. +, Mexico +, Central America +  and South America. +
0–10 m +
Coastal marshes +
Fruiting summer. +
in A. von Humboldt et al., Nov. Gen. Sp. +
Cyperus amplissimus +
Cyperus prolixus +
Cyperus subg. Cyperus +
species +