AMMIACEAE. 255 



camps and Placer Gulch ; Cameron Pass ; headwaters of Pass Creek ; Bob 

 Creek ; Gypsum Creek Canon, Eagle Co. ; Beaver Creek ; Berthoud Pass ; 

 between Sunshine and Ward. 



19. CONIOSELINUM Hoof. HEMLOCK PARSNIP. 



i. Conioselinum scopulorum (A. Gray) C. & R. (Ligusticum scopulorum A. 

 Gray) In mountain wood from Colo, to N. M. and Ariz. Alt. 7000-11,000 

 ft. Headwaters of Clear Creek; near Empire; Ironton Park, 9 miles south 

 of Ouray; Robinson; Red Mountain road south of Ouray; Alpine Tunnel; 

 Marshall Pass; mountains, Larimer Co.; Crested Butte; Cumbres ; Rabbit- 

 Ear Pass; Palmer Lake; Breckenridge; canon west of Palmer Lake; Elk 

 Canon; Ouray; Empire. 



20. HERACLEUM L. 



i. Heracleum lanatum Michx. In wet ground from Vt. and Alaska to 

 N. C. and Calif. Alt. 5000-10,000 ft. Ruxton Brook; west of Ouray; Gun- 

 nison ; Pagosa Springs ; north Cheyenne Canon ; Ft. Collins ; Mancos ; Baxter's 

 ranch ; along the Poudre ; between Sunshine and Ward. 



21. ANGELICA L. ANGELICA. 



Oil-tubes mostly solitary in the intervals, not continuous around the seed ; 



rays of the umbels ascending. 



Involucels of many-lanceolate, long-acuminate bractlets. i. A. Grayi. 



Involucels none, or a few linear-subulate or filiform bractlets. 2. A. pinnata. 

 Oil-tubes continuous around the seeds : rays of the umbels widely spreading. 



3. A. ainpla. 



1. Angelica Grayi C. & R. In the mountains of Colo, and S. Wyo. Alt. 

 9000-13,000 ft. Headwaters of Clear Creek ; Pike's Peak ; Silver Plume ; 

 near Pagosa Peak ; Cameron Pass ; Little Kate Basin, La Plata Mountains ; 

 Graymont ; West Spanish Peak ; Keblar Pass ; Boreas ; Beaver Creek. 



2. Angelica pinnata S. Wats. In wet meadows from Alb. to N. M. and 

 Utah. Alt. 7000-8500 ft. Gunnison Co. ; Squaw Hill above Cimarron ; 

 Empire. 



3. Angelica ampla A. Nels. In wet meadows of Wyo. and Colo. Alt. 

 about 7000 ft. Cheyenne Mountain ; north of Cheyenne Canon ; southeast of 

 Jefferson, South Park. 



22. CYNOMARATHRUM Nutt. 



i. Cynomarathrum Eastwoodii C. & R. Low plains of western Colo. 

 Grand Junction ; Mesa County. 



23. PASTINACA L. PARSNIP. 



i. Pastinaca sativa L. Cultivated and escaped around dwellings from Vt. 

 and Wash, to Fla. and Calif. Boulder. 



