FLOWERING PLANTS AND FERNS OF ARIZONA 1013 



9. Phyllaries not hispidulous-ciliolate on the margin (10). 



10. Heads (1 to 3) very large, 4 to 6 cm. thick; phyllaries broad, con- 

 spicuously graduated in many ranks; anthers with elongate, 

 slender-subulate tips; prickles of the leaves and involucre 

 usually strong and stiff, about 1 cm. long or more, sometimes 



shorter 11. C. orHROcEXTRUM. 



10. Heads usually several or smaller, or the involucre or the anthers 

 not as in C. ochrocentrinn (11). 

 11. Heads normally more than 1, crowded and subsessile at the apex 

 of the stem; corollas not more than tinged with purple. 



2. C. DRUMMON'DII. 



11. Heads normally solitary at the tips of the stem and branches; 

 corollas rosy purple, rarely ochroleucous (12). 

 12. Phyllaries with a comparatively broad, ovate or lance-ovate 



body 12. C. wheeleri. 



12. Phyllaries with a narrower, lanceolate or lance-oblong 

 body 13. C. uxdulatum. 



1. Cirsium parryi (A. Gray) Petrak, Bot. Tidsskr. 31: 68. 1911. 



Criicus parryi A. Gray, Amer. Acad. Arts and Sci. Proc. 10: 47. 



1874. 

 Carduus inornatus Woot. and Standi., Contrib. U. S. Natl. 



Herbarium 16: 195. 1913. 

 Cirsium inornatum Woot. and Standi., ibid. 19: 751. 1915. 



San Francisco Peaks, Coconino County (MacDougal 364), Pinaleno 

 Mountains, Graham County {Kearney and Peebles 9947, 14126), 9,000 

 feet, openings in coniferous forests, August. Colorado, New Mexico, 

 and Arizona. 



2. Cirsium drummondii Torr. and Grav, Fl. North Amer. 2 : 459. 



1843. 



Carduus coloradensis Rydb., Torrey Bot. Club Bui. 32 : 132. 



1905. 

 Cirsium coloradense Cockerell ex Daniels, Fl. Boulder, Colo. 



254. 1911. 



White Mountains (Apache and northern Greenlee Counties), San 

 Francisco Peaks and yicinity (Coconino County), 7,000 to 9,500 feet, 

 openings in coniferous forest, July to September. Saskatchewan to 

 British Columbia, south to Arizona and California. 



Flowers straw-colored, sometimes tinged with purple. 



3. Cirsium neomexicanum A. Gray, PL Wright. 2 : 101. 1853. 



Cirsium arcuum A. Xeis., Amer. Jour. Bot. 25 : 118. 1938. 



Coconino, Yayapai, and northern Mohaye Counties, south to 

 Cochise, Santa Cruz, and Pima Counties, 1,200 to 6,500 feet, plains, 

 mesas, and foothills, common, March to September, type of C. arcuum 

 from Canyon Lake, Maricopa County (A. and R. Nelson 1740). 

 Colorado to Xeyada, south to New Mexico, Arizona, and southern 

 California. 



Flowers lavender. Cirsium utahense Petrak. at least as represented 

 in Arizona, does not seem distinct from C. neomexicanum. 



*4. Cirsium wrightii A. Gray, PL Wright. 2: 101. 1853. 



Reported by Gray 14 from eastern Arizona. Western Texas to 

 Arizona. 



14 Gray. Asa. synoptical flora of north America. 12:1884. (See p. 40i.) 



