FLOWERIXG PLANTS AND FERNS OF ARIZONA 1009 



6. Senecio quercetorum Greene, Leaflets 2: 20. 1909. 



Southern Coconino County and mountains of Graham and Gila 

 Counties, 3,500 to 6,000 feet, chiefly in the oak belt, March to May. 

 type from Oak Creek (Busby 672). Known only from Arizona. 



7. Senecio franciscanus Greene, Pittonia 2: 19. 1889. 



San Francisco Peaks (Coconino County), where the type was col- 

 lected by Greene in 1889, up to 12,000 feet, July and August. Known 

 only from Arizona. 



8. Senecio multilobatus Torr. and Gray in A. Gray, Amer. Acad. 



Arts and Sci. Mem. ser. 2, 4: 109. 1849. 



Northern Apache, Navajo, and Coconino Counties, 6,000 to 7,000 

 feet, June to August. New Mexico and Arizona. 



Senecio multilobatus var. standleyi Greenm. does not seem different 

 from S. multilobatus, at least as to the only Arizona specimen seen, 

 from the north end of the Carrizo Mountains (Standley 7513). 



9. Senecio millelobatus Kydb., Torrey Bot, Club Bui. 27: 171. 1900. 

 Kaibab Plateau (Coconino County), Fredonia (Mohave County), 



near Prescott (Yavapai County), 4,500 to 7,000 feet, also bed of the 

 Agua Fria River (Maricopa County), about 1,000 feet, where doubt- 

 less a stray from farther north, May and June. Texas to Arizona 

 and Chihuahua. 



10. Senecio lynceus Greene, Erythea 3: 22. 1895. 



Northern Navajo County and from the Kaibab Plateau to near 

 Prescott (Coconino and Yavapai Counties), 5,500 to 7,500 feet, pine 

 forests, May to October, type not definitely stated but, by implication, 

 from Lynx Creek, Yavapai County (Rusby 665, in 1883). Southern 

 Utah and northern Arizona. 



11. Senecio stygius Greene, Leaflets 2: 21. 1909. 



Senecio prolixus Greenm., Mo. Bot. Gard. Ann. 1: 264. 1914- 



Grand Canyon (Coconino Countv), Pagumpa Springs, Kingman, 

 and Chloride (Mohave County), 3,300 to 6,000 (?) feet, near springs, 

 April and May, type of S. stygius from the Grand Canyon (Lemmon in 

 1884), type of S. prolixus {Lemmon 3130) probably a duplicate of this 

 collection. ^ Northwestern Arizona, southern Nevada, and south- 

 eastern California. 



12. Senecio uintahensis A. Nels. in Coult., New Man. Rocky 



Mount. 581. 1909. 



Senecio nelsonii var. uintahensis A. Nels., Torrev Bot. Club 

 Bui. 26: 484. 1899. 



Kaibab Plateau, Grand Canyon, and near Flagstaff (Coconino 

 County), about 7,000 feet, June to September. Wyoming to Arizona, 

 west to Oregon and California, 



Species 8 to 12 are doubtfully distinct. The plants are very variable 

 in the amount of tomentum, the leaves vary greatly in degree of 

 lobing or dissection, and the characters drawn "from the number of 

 phyllaries and pubescence of the achenes seem of little eonsequence. 

 Senecio thornberi Greenm., type from the San Francisco Peaks {Rusby 



