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Cyperus pseudothyrsiflorus is a plant species native to Nuevo León, New Mexico and Texas,[3][4][5] It occurs in cultivated fields and other disturbed areas at elevations of less than 1000 m (3400 feet).[6]

Cyperus pseudothyrsiflorus
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Cyperus
Species:
C. pseudothyrsiflorus
Binomial name
Cyperus pseudothyrsiflorus
(Kük.) J. Rich. Carter & S.D. Jones
Synonyms[1][2]

Cyperus uniflorus var. pseudothyrsiflorus Kük.

Cyperus pseudothyrsiflorus is a perennial herb spreading by underground rhizomes. Stems are triangular in cross-section, up to 40 cm (16 inches) tall.[6]

It is a member of Cyperus, subgenus Cyperus,[citation needed] section Umbellati.[1] It was first formally described as a new variety of C. uniflorus by Georg Kükenthal in 1937,[7] but was promoted to an independent species in 1997.[1] It is very similar to C. uniflorus,[1][8] which is now known as C. retroflexus.[1]


See also



References


  1. Carter, James Richard & Jones, Standley D. 1997. Notes on the Cyperus retroflexus complex (Cyperaceae) with three nomenclatural proposals. Rhodora 99(900): 319-334.
  2. Tropicos
  3. Kew World Checklist of Selected Plant Families
  4. Biota of North America Program, 2013 county distribution map
  5. Carter, James Richard & Jones, Standley D. 1998. Rhodora 99(900): 330.
  6. Flora of North America v 23 p 185.
  7. Engler, Heinrich Gustav Adolf. Das Pflanzenreich IV. 20(Heft 101): 521. 1936.
  8. Donovan Stewart Correll & Marshall Conring Johnston. 1970. Manual of the Vascular Plants of Texas. Texas Research Foundation.


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