CARDUACEAE. 377 



2. Hymenopappus cinereus Rydb. (H. ochroleucus Greene) On dry hills 

 and plains of Colo. Alt. 5000-11,000 ft. West of Loveland, Larimer Co.; 

 Twin Lakes; Rifle, Garfield Co.; Cimarron; Durango; Walsenburg; mesas 

 near Pueblo; Cucharas Valley, near La Veta; Garden of the Gods; Trinidad; 

 Palmer Lake ; across Gunnison River, Grand Junction ; mountains about 

 Manitou ; Florence; Buena Vista; Colorado Springs. 



3. Hymenopappus filifolius Nutt. On dry plains from Sask. and Mont, to 

 Neb., Colo, and Ore. Alt. 4000-6000 ft. Grand Junction ; Apishapa Creek, 

 Otero Co. ; foot-hills, Larimer Co. ; Ft. Collins ; Fossil Creek. 



4. Hymenopappus macroglottis Rydb. On dry hills and plains from Colo, 

 to Tex. and Ariz.- Exact locality not given ; specimens collected by Fremont. 



5. Hymenopappus parvulus Greene. On dry hills of western Colo. Alt. 

 about 7500 ft. Gunnison. 



60. LEUCAMPYX A. Gray. 



i. L'eucampyx Newberryi A. Gray. In canons of Colo, and N. M. Alt. 

 6000-9000 ft. Pagosa Springs ; West Indian Creek ; Cimarron. 



61. POLYPTERIS Nutt. 



i. Polypteris Hookeriana (T. & G.) A. Gray. On plains from Neb. and 

 Colo, to Tex. Alt. 4000-6000 ft. Golden ; Ft. Collins. 



62. PICRADENIOPSIS Rydb. 



i. Picradeniopsis oppositifolia (Nutt.) Rydb. (Bahia oppositifolia Nutt.) 

 In alkaline soil from S. D. and Mont, to Tex. and Ariz. Alt. 4000-7000 ft. 

 Foot-hills, Colorado Springs; La Veta; New Windsor; Ft. Collins; lola; 

 foot-hills west of Ft. Collins; Denver; Cucharas Valley, near La Veta; Gun- 

 nison ; Boulder ; Rocky Ford ; Pueblo ; near Timnath. 



63. ACHYROPAPPUS H. B. K. 



i. Achyropappus neo-mexicanus A. Gray. (Bahia neo-mexicana A. Gray) 

 In sandy soil from Colo, to N. M. and Ariz. ; also Mex. Alt. about 8000 ft. 

 Buena Vista; Alamosa. 



64. PLATYSCHKUHRIA (A. Gray) Rydb. 



Stem scapiform or nearly so ; leaves firm, oval to lanceolate, i. P. integrifolia. 

 Stem leafy ; leaves thin, oblong. 2. P. oblongifolia. 



1. Platyschkuhria integrifolia (A. Gray) Rydb. (Bahia nudicaulis A. 

 Gray; Schkuhria integrifolia A. Gray) In arid regions of Wyo. and Colo. 

 Alt. 4000-5000 ft. Deer Run; Grand Junction. 



2. Platyschkuhria oblongifolia (A. Gray) Rydb. (Bahia oblongifolia A. 

 Gray) In arid regions of Colo, and Utah. Valley of San Juan. 



65. BAHIA Lag. 



i. Bahia dissecta (A. Gray) Britton. (B. chrysanthemoides A. Gray) 

 Along streams from Wyo. to N. M. and Ariz. Alt. 6000-9000 ft. Bosworth's 



