FLOWERING PLANTS AND FERNS OF ARIZONA 275 



1. Eurotia lanata (Pursh) Moq., Chenop. Monog. 81. 1840. 

 Diotis lanata Pursh, Fl. Amer. Sept. 602. 1814. 



Apache County to Mohave County, south to Cochise and Pima 

 Counties, 2,000 to 7,000 feet, on dry plains and mesas, usually among 

 grasses, May to October. Saskatchewan to Washington, south to 

 Texas, Arizona, and California. 



The var. subspinosa (Rydb.) Kearney and Peebles (E. subspinosa 

 Rydb.) occurs throughout the range of the species in Arizona and is 

 apparently the only form present in the southern counties. As 

 compared with typical E. lanata, it has, normally, more woody stems, 

 more spreading branches, and hairs with few or no elongate rays, but 

 there is intergradation in all characters. 



9. ECHINOPSILON 



An annual herb; stems tall, much-branched; herbage loosely 

 villous; leaf blades linear, entire; flowers perfect, without bractlets, in 

 open leafy-bracted panicles of short spikes; perianth lobes each 

 bearing a dorsal tubercle or spine. 



1. Echinopsilon hyssopifolius (Pall.) Moq. in DC, Prodr. 13 2 : 135. 

 1849. 



Suaeda hyssopifolia Pall., Illus. PI. 44. 1803. 



Bassia hyssopijolia Kuntze, Rev. Gen. PL 1: 547. 1891. 



Kayenta, Navajo County (Eastwood and Howell 6541), Lake 

 Mead, Mohave County (Clover 4209), Arlington, Maricopa County 

 (McLellan and Stitt 1009), flowering in summer. A weed, here and 

 there in the western United States; introduced from Asia. 



10. KOCHIA 



Small perennial herbs; stems numerous from a woody base, mostly 

 unbranched; leaves entire, narrow, subterete, somewhat fleshy; 

 flowers mostly perfect, axillary, solitary or in small clusters; fruiting 

 perianth with 5 wedge-shaped, scarious, horizontal wings. 



Summer-cypress (K. scoparia) is a European species, often seen in 

 old-fashioned gardens. 



1. Kochia americana S. Wats., Amer. Acad. Arts and Sci. Proc. 9: 93. 



1874. 



Apache and Navajo Counties, 5,000 to 6,000 feet, on dry open 

 plains, often in saline soil, June to August. Wyoming to California, 

 northwestern New Mexico, and northeastern Arizona. 



This plant, sometimes known as green -molly and redsage, was 

 reported by Griffiths as sufficiently abundant in the valley of the Little 

 Colorado River to furnish winter feed for sheep. Both the glabrate 

 typical form and var. vestita S. Wats. (K. vestita Rydb.), which has 

 densely and permanently sericeous-villous herbage, occur in Arizona. 



11. CORISPERMUM. Bugseed 



Plants annual, herbaceous, with branching stems; herbage glabrous 

 or sparsely pubescent; leaves alternate, entire, narrow, 1-nerved; 

 flowers perfect, in narrow, loose, terminal spikes, each flower sub- 



