AMMIACEAE. 
257 
Idaho Springs; Larimer Co.; Ironton Park, 9 miles south of Ouray; moun¬ 
tain near Veta Pass; Pass Creek; Piedra; near Pagosa Peak; Gore Pass; 
Rico; Leroux Creek, Delta Co. 
2. Pseudocymopterus sylvaticus A. Nels. In woods of Colo, and Wyo.— 
Alt. 8000-12,000 ft.—Gulch, Mt. Harvard; Clear Creek Canon near George¬ 
town; Keblar Pass; Pike’s Peak; Veta Pass; Hahn’s Peak; mountains, Lari¬ 
mer Co.; West Indian Creek; Turkey Creek and tributaries; Veta Mountain; 
Seven Lakes; Bosworth’s; William’s Canon above Manitou; above Beaver 
Creek; Dillon Canon; Empire; mountains between Sunshine and Ward. 
3. Pseudocymopterus tenuifolius (A. Gray) Rydb. ( Thaspium montanum 
tenuifolium A. Gray) In mountain woods from Colo, to N. M. and Ariz.— 
Alt. 8000-10,000 ft.—Engelmann Canon; William’s Canon; Minnehaha; East 
Indian Creek; Lake City; vicinity of Como. 
4. Pseudocymopterus multifidus Rydb. (P. montanus multiddus Rydb.) 
In mountain woods of Colo.—Alt. 8000-10,000 ft.—Lake City; Ironton, San 
Juan Co.; Wahatoya Canon; Ironton Park, 9 miles south of Ouray; Seven 
Lakes. 
5. Pseudocymopterus purpureus (C. & R.) Rydb. (P. montanus purpureus 
C. & R.) In the mountains of Colo., Utah, N. M. and Ariz.—Alt. about 11,500 
ft.—Mt. Ouray; Garfield. 
6 . Pseudocymopterus anisatus (A. Gray) C. & R. ( Cymopterus anisatus A. 
Gray) On mountains among rocks from Wyo. and Nev. to Colo, and Utah.—■ 
Alt. 9000-11,000 ft.—Headwaters of Clear Creek; Ute Pass, Colorado Springs; 
Silver Plume; Little Veta Mountain; West Spanish Peak. 
7. Pseudocymopterus aletifolius Rydb. In the mountains of Colo, among 
rocks.—Alt. 6000-10,000 ft.—Minnehaha; Cheyenne Mountain.; Pike’s Peak; 
Ruxton; North Cheyenne Canon; Manitou; South Cheyenne Canon. 
26. CYMOPTERUS Raf. 
Umbels dense, globular; petals white; involucre wanting. 
Ultimate divisions of the leaves linear or linear-oblong, acutish. 
1. C. acaulis. 
Ultimate divisions of the leaves short, broadly oblong, obtuse. 
2. C. Parryi , 
Umbels open; petals yellow; involucre present, although often a mere vestige. 
Divisions of the leaves narrow. 3. C. Fendleri. 
Divisions of the leaves broad. 4. C. Newberryi. 
1. Cymopterus acaulis (Pursh) Rydb. (C. glomeratus DC.; C. campestris 
T. & G.) In dry arid places from N. D. and Ass. to Ark. and Colo.—Alt. 
4000-8000 ft.—Larimer Co.; Walsenburg; plains near Denver; mesas near 
Pueblo; Cucharas Valley near La Veta; butte 5 miles southwest of La Veta; 
Ft. Collins; Poudre River. 
2. Cymopterus Parryi (C. & R.) Jones. ( Coloptera Parryi C. & R.) In 
dry places from Mont, to Neb. and Colo.—McCoy’s, Eagle Co. 
3. Cymopteris Fendleri A. Gray. In dry places of Colo., Utah and N. 
M.—West water; Mancos; Grand Junction. 
4. Cymopterus Newberryi (S. Wats.) Jones. In dry places of Colo., Utah 
and N. M.—Westwater. 
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