Rare Plant List
County List
Agency Status
Photo List
About the List
History of Changes
Species Considered, but dropped
Photographers, Illustrators and Authors
Image Usage Guidelines
Discussion Group
Useful Literature

Carex ultra

Family: Cyperaceae

Distribution: This species is sporadic and rare in southwestern NM.

Plants Seen or Cited: New Mexico: Animas Mts., Wagner 588; Peloncillo Mts., Peterson 77-11; Little Hatchet Mts., Worthington.

Discussion: Several years ago Laird McIntosh told me he found this species along an irrigation ditch in Las Cruces. Miriam Fritts says the FNA treatment will place C. ultra into synonymy with C. spissa, which ranges into northern Mexico and is common in southern Arizona. She says C. spissa is not a rare species.

Important Information Sources:

Cronquist et al. 1977. Intermountain Flora, Vol. 6 - Monocots. Columbia Univ. Press.

Fritts, Miriam (Pers. Comm. 1998). Carex expert on Colorado and Arizona species. Lives in Tucson (520) 887-7291.

Great Plains Flora Association. 1986. Flora of the Great Plains. Univ. Press of Kansas, Lawrence.

Hermann, F.J. 1970. Carices of the Rocky Mountains and Colorado Basin. USFS Ag. Handbook No. 374.

Information Compiled By: Robert Sivinski, 1998

Photo credits in header Peniocereus greggii var. greggii © T. Todsen,
Lepidospartum burgessii © M. Howard, Argemone pleiacantha ssp. pinnatisecta © R. Sivinski
Design: J. Mygatt; Copyright © 1999-2005 New Mexico Rare Plant Technical Council