BORAGINACEAE. 293 



Corolla bright yellow or orange, 12 mm. or more long; crest of the tube 



prominent. 

 Floral leaves of the later flowers small, shorter than the flowers ; limb of the 



corolla 6-8 mm. wide. 3. L. multiliorum. 



Floral leaves of the later flowers not reduced ; limb of the corolla 8-20 mm. 



wide. 

 Hispid pubescent ; corolla-tube bearded at the base within. 



4. L. Gmelini. 

 Canescent ; corolla-tube not bearded at the base within. 



5. L. canescens. 

 Corolla-lobes fimbriate or dentate ; later flowers cleistogamous. 



Corolla 2.5-3 (rarely only 2) cm. long; lobes distinctly fimbriate. 



6. L. linearifolium. 

 Corolla 2 cm. or less long ; lobes dentate. 



Corolla 15-20 mm. long; limb 8-20 mm. wide. 7. L. mandanense. 



Corolla 10 mm. or less long; limb 6-8 mm. wide. 8. L. breviflorum. 



1. Lithospermum Torreyi Nutt. On hills and in canons from Mont, and 

 Ida. to Colo, and Utah. Alt. 8000-8600 ft. Poverty Ridge, near Cimarron ; 

 below Parrott Post Office; Steamboat Springs. 



2. Lithospermum pilosum Nutt. On hills from Alb. and B. C. to Colo, and 

 Nev. Leroux Creek, Delta Co. ; Minturn ; Denver. 



3. Lithospermum multiflorum Torn On hills and mountain sides and in 

 canons from Wyo. to N. M. and Ariz. ; also in Mex. Alt. 7000-10,000 ft. 

 Thompson's Park, La Plata Mountains ; Crystal Park ; Colorado Springs ; 

 Estes Park, Larimer Co. ; Grayback mining camps and Placer Gulch ; mouth 

 of Cheyenne Canon ; North Cheyenne Canon ; Artist's Glen ; Como, South 

 Park; Canon City; southeast of Ouray; Piedra; above Mancos; Pike's Peak; 

 headwaters of Clear Creek ; Horsetooth Gulch ; Table Rock ; Northwest of 

 Soldier Canon ; Hotchkiss; Rist Canon; Seven Lakes; Empire. 



4. Lithospermum Gmelini (Michx.) Hitchc. (L. hirtum Lehm.) In sandy 

 places and dry plains from N. Y. and Mont, to Fla. and N. M. Denver 

 (Eastwood). 



5. Lithospermum canescens (Michx.) Lehm. On plains and in open 

 woods from Ont. and N. D. to Ala., Tex. and Colo. Alt. 4000-6000 ft. 

 Boulder. 



6. Lithospermum linearifolium Goldie. (L. angustifolium Michx.) On 

 prairies and plains from 111., Man. and B. C. to Tex. and Ariz. Alt. 4000- 

 7000 ft. Mt. Harvard; Colorado Springs; river-bluffs, north of La Veta ; 

 mesas near Pueblo; Cucharas River below La Veta; Trinidad; plains near 

 Denver ; Ft. Collins ; Lamar ; Durango ; Spring Canon ; Boulder. 



7. Lithospermum mandanense Spreng. On dry plains from N. D. and 

 Alb. to Tex. and Ariz. Alt. 4000-5000 ft. Larimer Co. ; Colorado City. 



8. Lithospermum breviflorum Engelm. & A. Gray. (L. albescens Greene) 

 On dry plains from Ark. and Colo, to Tex. and N. M. ; also Mex. Alt. 

 4000-6000 ft. Arboles; Boulder. 



ii. ONOSMODIUM Michx. FALSE CROMWELL. 



i. Onosmodium occidentale Mackenzie. On plains and in sandy soil from 

 Man. and B. C. to Mo., Tex. and Utah. Alt. 3500-5000 ft. Along Platte 

 River, Denver; Ft. Collins; Boulder; Golden; Longmont. 



