268 GENTIANACEAE. 



1. Swertia scopulina Greene. In mountain meadows of Colo. Alt. about 

 10,000 ft. Keblar Pass. 



2. Swertia palustris A. Nels. (S. perennis Am. auth. ; not L.) In wet 

 places from Mont, to Colo, and Utah. Alt. 8000-13,000 ft. Pike's Peak; near 

 Pagosa Peak ; Stephen's Mine ; 4 miles west of Cameron Pass ; Crested Butte ; 

 Marshall Pass ; near Ironton, San Juan Co. ; Clear Lake ; Gray's Peak ; Artist's 

 Glen near Pike's Peak; Georgetown; Hamor's Lake above Durango; Alpine 

 Tunnel; Mt. Harvard; Ruxton Dell; above timber line, Silver Plume; Breck- 

 enridge ; headwaters of Clear Creek ; Ragged Mountain, Gunnison Co. ; 

 Georgetown; Berthoud Pass; Buffalo Pass. 



3. Swertia congesta A. Nels. In wet places in the alpine regions from 

 Mont, to Colo, and Utah. Alt. about 12,000 ft. Seven Lakes. 



9. FRASERA Walt. 



Petals about 2 cm. long, usually exceeded by the long sepals. 



Plant glabrous ; inflorescence simple with verticillate pedicels ; basal leaves 



over i dm. wide. i. F. macrophylla. 



Plant puberulent ; inflorescence compound ; some branches simple, others again 



branched ; basal leaves about 5 cm. wide. 2. F. scabra. 



Petals about 15 mm. long or less; inflorescence compound. 



Sepals narrowly linear, usually much exceeding the petals ; floral leaves nar- 

 rowly linear-lanceolate, very long. 3. F. stenosepala. 

 Sepals linear-lanceolate, scarcely equalling the petals ; floral leaves similar to 



the upper stem-leaves, but smaller and narrower. 



Stem-leaves oblanceolate. 4. F. speciosa. 



Stem-leaves linear-lanceolate. 5. F. angustifolia. 



1. Frasera macrophylla Greene. -On hills from Wyo. to Colo, and Utah. 

 Alt. 9000-10,000 ft. Pagosa Springs; Keblar Pass; Ironton Park, 9 miles 

 south of Ouray. 



2. Frasera scabra (Jones) Rydb. (F. speciosa scabra Jones) On hills 

 from Colo, to Ariz. Alt. 8000-10,000 ft. Bob Creek, West La Plata Moun- 

 tains ; Abiqua Peak. 



3. Frasera stenosepala Rydb. On the hills from Wyo. to N. Mex. Alt. 

 6000-9500 ft. Foot-hills, Larimer Co. ; Ward, Boulder Co. ; The Crags, 

 Pike's Peak; headwaters of Clear Creek, near Empire; Pike's Peak trail. 



4. Frasera speciosa Dougl. On hills from S. D., Mont, and Ore. to Colo, 

 and Calif. Alt. 7000-10,000 ft. Sand Creek Pass; Manitou; Mt Abram, 

 Ouray ; Cheyenne Mountain ; Howe's Gulch ; Bosworth's ranch, Stove Prairie ; 

 gulch west of Pennock's; Rist Canon; Horsetooth Gulch; Ute Pass. 



5. Frasera angustifolia Rydb. On dry hills from Mont, to Colo. Moun- 

 tains between Sunshine and Ward. 



Family 108. MENYANTHACEAE G. Don. BUCKBEAN FAMILY. 

 i. MENYANTHES L. BUCKBEAN, MARSH TRIFOIL. 



i. Menyanthes trifoliata L. In water from Greenl. and Alaska to Pa. and 

 Calif.; also in Europe and Asia. Estes Park, Larimer Co. 



