160 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



11. Cyperus parishii Britton, South. Calif. Acad. Sci. Bui. 3: 52. 1904. 



Cyperus sphacelatus Britton, Torrey Bot. Club Bui. 13: 212 



1886. NotRottb., 1773. 

 Cyperus congestus Vahl var. parishii Kukenthal, Pflanzen- 



reichlV. 101: 446. 1936. 



Prescott (Yavapai County), near Phoenix (Maricopa County), 

 Sulphur Springs Valley (Cochise County), 1,000 to 5,300 feet. New 

 Mexico to Washington and California. 



12. Cyperus manimae H. B. K., Nov. Gen. et Sp. 1: 209. 1816. 

 Sonoita Valley, Santa Cruz County, 5,850 feet (Rothrock 600). 



Texas to Arizona, southward to Argentina. 



The Arizona form apparentlv is var. asperrimus (Liebm.) Ktiken- 

 thal. 



13. Cyperus fendlerianus Boeckl., Linnaea 35: 520. 1868. 

 Apache to Coconino Counties southward to Cochise, Santa Cruz, 



and Pima Counties, 4,500 to 9,500 feet. Western Texas to Arizona 

 and northern Mexico. 



Common in forests of yellow pine. It is stated that the tuberous 

 roots were eaten by the Apache Indians. 



14. Cyperus rusbyi Britton, Torrey Bot. Club. Bui. 11: 29. 1884. 



Cyperus schweinitzii Torr. var. debilis Britton, ibid. 13: 208. 



1886. 

 Cyperus fendlerianus Boeckl. var. debilis Kukenthal, Pflanzen- 



reichlV. 101: 465. 1936. 



Pinal Mountains (Gila County) to the Chiricahua Mountains 

 (Cochise County) and Nogales (Santa Cruz County), 4,000 to 5,500 

 feet. Western Texas to Arizona, southward to Guatemala. 



Grows on dry slopes, usually with grasses, at lower elevations than 

 C.jendlerianus. 



15. Cyperus wrightii Britton, Torrey Bot. Club Bui. 13: 215. 1886. 

 Mountains of Cochise, Pima, and Santa Cruz Counties, 3,500 to 



5,000 feet, in rich soil of wooded canyons. Texas to Arizona, south- 

 ward into Mexico. 



A form apparently related to C. wrightii, but with a more lax 

 inflorescence and longer spikelets, was collected near Ruby, Santa 

 Cruz County (Kearney and Peebles 14906). 



16. Cyperus pringlei Britton, Torrey Bot. Club Bui. 12: 7. 1885. 



Cyperus tetragonus Ell. var. pringlei Kukenthal, Pflanzenreich 

 IV. 101: 493. 1936. 



Mountains of Graham, Gila, Cochise, Santa Cruz, and Pima Coun- 

 ties, 3,600 to 7,000 feet, on slopes and in canyons, often among pines. 

 Arizona and northern Mexico. 



The roots are strongly camphor scented. 



17. Cyperus aristatus Rottb., Desc. et Icon. 23. 1773. 



Grand Canyon (Coconino County) to the mountains of Cochise, 

 Santa Cruz, and Pima Counties, 2,500 to 7,000 feet. Throughout most 

 of North America, also in South America; Tropics of the Eastern 

 Hemisphere. 



