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. 



ig. CONIOSELINUM Hoof. Hemlock Parsnip. 



I. Conioselinum scopulorum (A. Gray) C. & R. (LigusHcum scopidorum 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 ; cafion 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. a. A. pinnata. 

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



3. A. ampla. 



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 meado#s of Wyo. and Colo. — Alt. 

 about 7000 ft. — Cheyenne Mountain ; north of Cheyenne Cafion ; 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. 



