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



22. Phacelia palmeri Torr. ex. S. Wats, in King, Geol. Expl. 40th 



Par. 5: 251. 1871. 

 Coconino County, Lees Ferry {Jones in 1890), Mohave County, 

 at Mokiak (Cottam 4113) and near Wolf Hole (Peebles and Parker 

 14741), 3,200 to 5,500 feet. Southern Utah, Nevada, and northern 

 Arizona. 



23. Phacelia serrata J. Voss, Torrey Bot. Club Bui. 64: 88. 1937. 

 Grand Canyon, San Francisco Peaks, and near Flagstaff (Coconino 



County), 5,200 to 7,000 feet, July to September, type from the San 

 Francisco Peaks (Purpus 8064). Known only from northern Arizona. 



24. Phacelia congesta Hook., Curtis's Bot. Mag. 62: pi. 3452. 1835. 

 A collection in the Chiricahua Mountains, Cochise County (Good-ding 



2330) is cited by Voss, who refers it to var. rupestris (Greene) Mac-, 

 bride (P. rupestris Greene). Texas to southeastern Arizona. 



25. Phacelia popei Torr. and Grav, U. S. Rpt. Expl. Miss. Pacif. 2: 



172. 1855. 



Graham, Pinal, Cochise, Santa Cruz, and Pima Counties, 1,600 to 

 5,000 feet, common on plains and mesas, February to May. Texas 

 to southern Arizona. 



This species is represented in Arizona by var. arizonica (Gray) 

 J. Voss (P. arizonica Gray). 



26. Phacelia neomexicana Thurber ex Torr., U. S. and Mex. Bound. 



Bot. 143. 1859. 



Apache County to Coconino and Yavapai Counties, 5,500 to 8,500 

 feet, May to August. Colorado, New Mexico, and Arizona. 



Most of the Arizona specimens belong to var. pseudo-arizonica 

 (Brand) Voss, characterized by low, spreading or decumbent stems, 

 these not or sparingly branched above the base, and by a bluish- 

 purple (exceptionally whitish) corolla. The var. alba (Rydb.) 

 Brand with tall, erect, very leafy, freely branched stems and whitish 

 corollas occurs in Apache County, on open flats at Alpine (Goodding 

 1262), and near Springerville (Stitt 1481). 



27. Phacelia pedicellata A. Gray, Syn. Fl. 2 1 : 160. 1878. 

 Maricopa, Mohave, and Yuma Counties, 1,000 to 3,000 feet, dry 



rocky slopes, March to May. Western Arizona, southeastern Cali- 

 fornia, and Baja California. 



The plant is glandular-viscid and veiy ill-scented. 



28. Phacelia coerulea Greene, Torrey Bot. Club Bui. 8: 122. 1881. 

 Coconino and Mohave Counties to Greenlee, Santa Cruz, Pima, 



and Yuma Counties, 2,000 to 5,000 feet, rocky slopes, March and 

 April. Western Texas to Arizona and northern Mexico. 



Specimens with relatively narrow, pinnatifid leaf blades are difficult 

 to distinguish from P. crenulata Torr., except by the included stamens. 



29. Phacelia corrugata A. Nels., Bot. Gaz. 34: 26. 1902. 



Apache County to Coconino County, 5,000 to 7,000 feet, gravelly 

 flats and barren rocky slopes, May to September. Colorado and 

 Utah to Texas, northern Arizona, and northern Mexico. 



Scarcely more than a variety of P. crenulata Torr. (P. crenulata var. 

 corrugata Brand). 



