FLOWERING PLANTS AND FERNS OF ARIZONA 907 



*13. Aplopappus cervinus S. Wats.. Amer. Nat. 7: 301. 1873, as 

 Haplopappus, 



Erica me ria cervina Rydb., El. Rocky Mount. 853. 1917. 



Canyons, Utah (and reported from adjacent Arizona). 



14. Aplopappus salicinus Blake, Biol. Soc. Wash. Proc. 48: 171. 



1935. 

 Known only from the type collection on Bright Angel Trail, Grand 

 Canyon (Eastwood 10), in bud in October. 



15. Aplopappus scopulorum (M. E. Jones) Blake in Tidestrom, Con- 



tnb. U. S. Natl. Herbarium 25: 546. 1925. 



Bigelovia menziesii var. scopulorum M. E. Jones, Calif. Acad. 



Sci. Proc. ser. 2, 5: 692. 1895. 

 Isocoma scopulorum Rydb., Fl. Rocky Mount. 859. 1917. 



Both sides of the Grand Canyon, Coconino County (Eastwood 3586, 

 Eastwood and Howell 7111), September. Southern Utah and northern 

 Arizona. 



In the typical form the stem and leaves are glabrous, except for the 

 eiliolate leaf margin. The var. hirtellus Blake, with hirtellous young 

 branches, peduncles, and leaves, has been collected in Waterlily Can- 

 yon, 35 miles north of Kayenta, Navajo County (R. E. Burton in 

 1934), and it occurs also in southeastern Utah. 



16. Aplopappus tenuisectus (Greene) Blake in Benson, Amer. Jour. 



Bot, 27: 188. 1940. 



Linosyris coronopijolia A. Gra} T , PL Wright. 1: 96. 1852. 



ftot Aplopappus coronopifolius DC, 1836. 

 Isocoma tenuisecta Greene, Leaflets 1: 169. 1906. 

 Isocoma fruticosa Rose and Standi., Contrib. U. S. Natl. 



Herbarium 16: 18. 1912. 

 Aplopappus fruticosus Blake in Standi., Contrib. U. S. Natl. 



Herbarium 23: 1493. 1926. 



Western Cochise and Pima Counties, 2,000 to 4.000 feet, plains, 

 August to October, type of Isocoma tenuisecta from Tucson (Smart in 

 1867). Southwestern Texas, southern Arizona, and Sonora. 



17. Aplopappus acradenius (Greene) Blake in Tidestrom, Contrib. 



U. S. Natl. Herbarium 25: 546. 1925. 



Bigelovia acradenia Greene, Torre v Bot. Club Bui. 10: 126. 



1883. 



Grand Canyon (Coconino County), and Mohave, Gila, Maricopa, 

 Pinal, Pima, and Yuma Counties, up to 4,000 feet, in various habitats, 

 often in saline soil, August to October. Southern Utah to Arizona 

 and southern California. 



18. Aplopappus heterophyllus (A. Grav) Blake in Tidestrom, Contrib. 



U. S. Nat. Herbarium 25: 546. 1925. 



Linosyris heterophylla A. Gray, PL Wright. 1: 95. 1852. 

 Linosyris vrightii A. Gray, ibid. 

 Isocoma heterophylla Greene, Erythea 2: 111. 1S94. 

 Isocoma wrightii Rydb., Torrey Bot. Club Bui. 33: 152. 1906. 

 Navajo, eastern Coconino, and Yavapai Counties, south to Cochise, 

 Pima, and Yuma Counties, up to 5,000 feet, mesas and plains, often 



