CARDUACEAE. 377 



2. Hymenopappus cinereus Rydb. (//. ochrolcucus 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. Leucampyx 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 oppositifoUa 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 nudicanlis 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 



