Lipocarpha occidentalis

Lipocarpha occidentalis, the Western halfchaff sedge,[2] or Pacific halfchaff sedge, is a plant species native to western part of the United States but cultivated as an ornamental in other regions.[3] It is widespread in California (in the Mojave and Sonoran Deserts, the Central Valley, and the Redwood Country), with populations also reported from Oregon (Klamath County) and Washington state (Klickitat County).[4][5]

Pacific halfchaff sedge
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Cyperaceae
Genus: Lipocarpha
Species:
L. occidentalis
Binomial name
Lipocarpha occidentalis
(A. Gray) G.C. Tucker
Synonyms[1]
  • Hemicarpha occidentalis A. Gray
  • Scirpus occidentalis (A. Gray) C.B. Clarke

Lipocarpha occidentalis is an annual herb up to 50 cm tall, forming clumps but not rhizomes. Culms are round in cross-section. Leaves are bristly, up to 3 cm long. Inflorescence an egg-shaped cluster of spikes; each spike with 2 scales, each scale subtending a hermaphroditic flower. Achenes are egg-shaped, up to 1 mm long.[4][6][7][8][9][10]

References
  1. Tropicos
  2. "Lipocarpha occidentalis". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 22 June 2015.
  3. Gardening.eu, Papiro Lipocarpha occidentalis Archived 2014-03-11 at the Wayback Machine
  4. Flora of North America v 23 p 197, Lipocarpha occidentalis
  5. BONAP (Biota of North America Project) floristic synthesis, Lipocarpha occidentalis
  6. Tucker, Gordon C. 1987. Journal of the Arnold Arboretum 68(4): 410.
  7. Gray, Asa. 1868. Proceedings of the American Academy of Arts and Sciences 7(2): 391–392.
  8. Clarke, Charles Baron. 1908. Bulletin of Miscellaneous Information: Additional Series 8: 30.
  9. Goetghebeur, P. & A. Van den Borre. 1989. Studies in Cyperaceae 8. A revision of Lipocarpha, including Hemicarpha and Rikliella. Wageningen Agricultural University Papers 89(1): 1–87.
  10. Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.
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