Difference between revisions of "Cyperus hypopitys"

G. C. Tucker

Syst. Bot. Monogr. 43: 129, fig. 54. 1994.

Common names: Pinewoods sedge
Treatment appears in FNA Volume 23. Treatment on page 178. Mentioned on page 146.
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name=Cyperus hypopitys
 
name=Cyperus hypopitys
|author=
 
 
|authority=G. C. Tucker
 
|authority=G. C. Tucker
 
|rank=species
 
|rank=species
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|publication year=1994
 
|publication year=1994
 
|special status=
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_300.xml
+
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_300.xml
 
|genus=Cyperus
 
|genus=Cyperus
 
|subgenus=Cyperus subg. Cyperus
 
|subgenus=Cyperus subg. Cyperus

Latest revision as of 20:39, 5 November 2020

Herbs, perennial, rhizomatous, tending to form small clumps by basal offshoots. Culms triquetrous, bulbous, thickened, (20–)30–80(–90) cm × 0.7–1.2 mm, glabrous proximally, becoming trigonous strongly scabridulous on distal angles, clothed with persistent reddish fibers at base. Leaves flat to V-shaped, 20–45 cm × 2–4 mm. Inflorescences: spike 1, loosely ovoid to ovoid-ellipsoid, (1.5–)2.5–7 × (1–)1.5–3.5 cm; rays (1–)2–4, to 6 cm; 2d order rays rarely present, to 2 cm; 3d order rays absent; bracts (2–) 3, ± horizontal, 1–15(–21) cm × 0.4–3.5 mm; rachilla deciduous, wings hyaline, 0.3–0.4 mm wide. Spikelets (3–)8–26, reddish to reddish brown, linear, compressed-quadrangular, 8–18 × (2.4–)2.8–4 mm; floral scales deciduous, 6–16, laterally reddish, medially green, occasionally red-glandular, laterally strongly 3(–4)-ribbed, medially punctate, 1–3-ribbed, ovate-lanceolate, (2.6–)2.8–3.3 × (1.4–)1.6–1.8(–2) mm, apex weakly 3-dentate, mucronulate, with tuft of crystalline prickles, medially glabrous. Flowers: anthers 0.8–1.1 mm; styles 1–1.4 mm; stigmas 1–1.4 mm. Achenes brownish, stipitate, ellipsoid, 1.6–2 × (0.7–)0.9–1 mm, base whitish, stipe to 0.1–0.2 mm, apex obtuse, slightly apiculate, surfaces papillose.


Phenology: Fruiting late summer–early fall.
Habitat: Canyons in pine forests
Elevation: 500–1500 m

Distribution

V23 300-distribution-map.jpg

Ariz., Mexico (Chihuahua, Durango, Sinaloa, Sonora).

Discussion

Of conservation concern.

Cyperus hypopitys can be recognized by the combination of reddish floral scales and sharp-angled culms.

Selected References

None.

Lower Taxa

None.
... more about "Cyperus hypopitys"
Gordon C. Tucker* +, Brian G. Marcks* +  and J. Richard Carter * +
G. C. Tucker +
Pinewoods sedge +
Ariz. +, Mexico (Chihuahua +, Durango +, Sinaloa +  and Sonora). +
500–1500 m +
Canyons in pine forests +
Fruiting late summer–early fall. +
Syst. Bot. Monogr. +
Undefined subg. Chlorocyperus +, Cyperus subg. Mariscus +  and Undefined subg. Papyrus +
Cyperus hypopitys +
Cyperus subg. Cyperus +
species +