HYDROLEACEAE. 283 



Corolla-lobes distinctly dentate or erose. 



Corolla white ; stamens about twice as long as the corolla. 



8. P. alba. 

 Corolla purplish or pink ; stamens slightly exceeding the corolla. 



9. P. neo-mexicana. 

 Plant perennial, cespitose ; inflorescence spicate-thyrsiform. 



Plant equally sericeous throughout ; segments of the leaves narrowly linear. 



10. P. sericea. 

 Plant finely pubescent, hirsute-ciliate on the petioles ; segments of the 

 leaves oblong. 11. P, ciliosa, 



1. Phacelia leucophylla Torr. On dry hills from S. D. and Wash, to Colo, 

 and Utah. — Alt. up to 8000 ft. — Horsetooth Gulch; mountains between Sun- 

 shine and Ward. 



2. Phacelia alpina Rydb. On mountains from Mont, to Colo, and Nev. — 

 Alt. 7000-12,500 ft. — Steamboat Springs ; Silver Plume ; Mt. Harvard ; near 

 fronton, San Juan Co. 



3. Phacelia heterophylla Pursh. On hills from Mont, and Wash, to Colo, 

 and Calif. — Alt. 6000-9000 ft. — Near Empire; fronton Park, 9 miles south 

 of Ouray; foot-hills, Larimer Co.; Narrows, Poudre Canon; Howe's Gulch; 

 Dixon Gallon ; gulch west of Pennock's ; Horsetooth Mountain ; Rist Canon ; 

 Rabbit-Ear Range, Routt Co. ; Platte River ; Colorado Springs ; Eldora to 

 Baltimore; Ft. Collins; Amelia; Table Rock; Ute Pass, near Pike's Peak; 

 Pagosa Peak; Van Boxle's ranch, above Cimarron; Ouray; Upper West 

 Mancos Canon; Sangre de Cristo Creek; East Indian Creek; Lake Moraine; 

 William's Caiion, near Pike's Peak; Trail Glen; Boulder; Rist Cation; 

 Ragged Mountain. 



4. Phacelia integrifolia Torr. In gypsum soil from Colo, and Utah to 

 western Tex. and Ariz. ; also Mex. — " Southwestern Colorado." 



5. Phacelia corrugata A. Nels. In dry soil from Colo, and Utah to western 

 Tex. and N. M. — Alt. 4000-5000 ft. — Grand Junction ; Rifle, Garfield Co. ; 

 Palisade. 



6. Phacelia splendens Eastw. In dry ground in Colo, and Utah. — Alt. 

 5000-8000 ft. — Ouray; Cimarron; Hotchkiss, Delta Co.; Grand Junction; 

 Lake City. 



7. Phacelia glandulosa Nutt. In gravelly soil from Mont, to western Tex. 

 and Ariz. — Alt. 6000-10,000 ft. — Mt. Harvard; Cheyenne Canon; West Span- 

 ish Peak ; Walsenburg ; Lake City ; Cumbres ; foot-hills, Larimer Co. ; Howe's 

 Gulch. 



8. Phacelia alba Rydb. In valleys from Wyo. to N. M.— Alt. 8000-10,000 

 ft. — Headwaters of Clear Creek; Sangre de Cristo Creek; La Veta; Placer; 

 Doyle's; Georgetown; Marshall Pass; Graymont; Eldora to Baltimore. 



9. Phacelia neo-mexicana Thurber. In sandy soil from Colo, to N. M. — 

 Alt. 4500-7500 ft. — Georgetown; between La Veta and Gardner, near Badito; 

 Trinidad ; Salida ; La Porte, Larimer Co. ; Dillon Caiion. 



10. Phacelia sericea Hook. In the mountains from Mont, and B. C. to 

 Colo, and Nev. — Alt. 9000-13,000 ft. — Lake City; mountains south of Ward, 

 Boulder Co. ; Mt. Garfield ; Tennessee Pass, 7 miles west of Leadville ; Lead- 

 ville. Lake Co. ; Mt. Harvard ; Larimer Co. ; Silverton ; Medicine Bow Moun- 

 tains; above Graymont; above Como; Beaver Creek; Larimer Co.; Eldora 

 to Baltimore. 



