239 



Aplopappus armerioides, Kutt. 



Mesas of Southwestern Colorado, 7,000 feet. 

 Aplopappus gracilis, Gray, Plant. Fend., 76. 



Mancos Plains, 7,500 feet altitude. 

 Baccharis WRiaHTii, Gray, Plant. Wright, 101. 



Soda Spring Ledge, Caiion City. 

 DICORIA Brandegei, Gray, Proc. Am. Ac, xi, 7G, new species. 



Diffusa, pube substrigulosa cinerea ; foliis lanceolatis obtusis subiu- 

 tegerrimis ; capitulis laxe racemoso-paniculatis parvis ; involacri squama 

 interna florem fcemineum fulcrante unica ceteris hand longiore achenio 

 oblongo turgido margine calloso-dentato subdimidio breviore. 



An interesting accession to the genus, requiring considerable modifi- 

 cation of the character. 



Common along the San Juan, between McElmo and Eecapture Creeks. 



OxYTENiA acerosa, Nutt., PI. Gambell, 172. 



Yery abundant in the dry gulches running into the San Juan at about 

 4,500 feet altitude. 



Excelia erutescens. Gray, Proc. Am. Ac, viii, 657. 

 Eocky edges of mesas, Southwestern Colorado. 



Encelia microcephala. Gray, Proc. Am. Ac, viii, 657. 



San Juan Valley, 4,500 feet. 

 Hymenantherum (Lowellia) aureum. Gray, Plant. Fend., 89. 



Caiion City, Colorado Springs, Pueblo, and on the Huerfano. 

 Wyethia scabra, Hook., Proc. Am. Ac, viii, 655. 



La Plata Valley, 5,000 feet ; base of Cariso. 

 Wyethia angustifolia, Nutt. 



Valley of Los Pinos Creek, 8,000 feet. 

 Balsamorhiza sagittata, ISTutt. 



Mesas of La Plata and Los Pinos Creeks, 8,000 feet. 

 Actinella Torreyana, Gray. 



Mesas of Southwestern Colorado — common. 

 Hymenopappus flavescens. Gray, Plant. Feud., 97. 



San Juan Valley, 4,500 feet altitude. 

 Hyimenopappus luteus, Kutt. 



San Luis Valley. 

 ScHKUHRiAiXTEGRiFOLiA,var.o&?o>i</j/bZm, Gray, Proc. Am. Ac, ix, 199. 



Hovenweep, McElmo — common — 4,500 to 6,000 feet. 

 ScHKUHRiA ISTeo-MexicaNxI, Gray, PI. Fend., 96. 



Eio Grande Valley, near Del Xorte — plants small, not 2 inches high. 



ARTE3IISIA BIENNIS, Willd. 



Near Caiion City and Parrott City. 

 Arte:\iisia Bigeloyii, Gray. 

 Abundant in the Arkansas Valley. 



