FLOWERING PLANTS AND FERNS OF ARIZONA 165 



3. Eleocharis nodulosa (Roth) Schult., Mant. 2: 87. 1824. 



Scirpus nodvlosus Roth, Nov. PL 29. 1821. 



Pima County, Santa Catalina Mountains {Pringle in 1881, Thornber 

 309), Rincon Mountains {Peebles and Kearney 10463). Florida and 

 Arizona to Argentina. 



4. Eleocharis macrostachya Britton in Small, Fl. Southeast. U. S. 184, 



1327. 1903. 



Eleocharis palustris of authors. Not Scirpus palustris L. 

 Eleocharis xyridiformis Fern, and Brackett, Rhodora 31: 76. 



1929. 



The most variable and abundant species in northern and central 

 Arizona (Apache, Coconino, and Yavapai Counties), wet places. Mis- 

 souri to British Columbia, Arizona, and Mexico. 



5. Eleocharis calva Ton., Fl. X. Y. 2: 346. 1843. 



Eleocharis glaucescens of authors. Xot Scirpus gla ucescens Willd. 



Willow Spring, Apache County (Palmer 551). Camp Grant, Gra- 

 ham County (Bothrock 380). Quebec to Washington, south to 

 Mexico. 



The Arizona collections are doubtfully distinct from E. macrostachya. 



*6. Eleocharis parvula (Roem. and Schult. I Link ex Bluff, Nees, and 

 Schauer in Bluff and Finsrerhutk, Comp. FL Germ., ed. 2, 

 l 1 : 93. 1836. 



Scirpus parwlus Roem. and Schult., Syst. Yeg. 2: 124. 1817. 



Xot definitely known from Arizona, but var. anachaeta (Torr.) 

 Svenson, with characters as given in the key, is likely to be found 

 there. This variety ranges from South Dakota to Idaho, southward 

 to Venezuela. 



7. Eleocharis pauciflora (Lightf.) Link, Hort. Berol. 1: 284. 1827. 



Scirpus paucijlorus Lightf., FL Scot. 2: 1078. 1777. 



Flagstaff, Coconino County, (Hitchcock in 1915). wet calcareous 

 places. North America and northern Eurasia, Andes of South 

 America. 



The Arizona specimen belongs to the well-marked var. suksdorfiana 

 (Beauverd) Svenson, which closely simulates E. rostcllata. 



8. Eleocharis rostellata Torr., FL X. Y. 2: 347. 1843. 



Grand Canyon, Coconino County (Wooton 2012), Fort Huachuca, 

 Cochise County (Lemmon 2907), wet saline places. North and 

 South America; West Indies. 



9. Eleocharis parishii Britton, X. Y. Micros. Soc. Jour. 5: 110. 1889. 



Eleocharis montana of authors. Xot H. B. K. 



Widely distributed in Arizona from desert areas to mountain 



meadows, Apache to Mohave and Cochise Counties. Oregon to 

 Arizona, California, and northern Mexico. 



