POLEMONIACEAE. 275 



Calyx over i cm. long; leaves flat; margins not revolute ; stem 5-10 



cm. high. 4. P. multiflora. 



Calyx less than i cm. long ; leaves very narrow with revolute margins. 



5. P. depress a. 

 Calyx less than 8 mm. long; its lobes much shorter than the tube. 



6. P. scleranthifolia. 

 Leaves hispid-ciliate on the margin, usually with more or less glandular hairs. 



Leaves linear to subulate, not with thickened margins. 



Leaves less than i cm. long ; plant densely pulvinate-cespitose ; limb of 



corolla seldom over i cm. broad. 

 Leaves almost erect, appressed ; corolla-limb 6-8 mm. wide. 



7. P. condensata. 

 Leaves ascending-spreading; corolla-limb about 10 mm. wide. 



8. P. caespitosa. 

 Leaves over i cm. long ; plant cespitose, but not pulvinate ; corolla-limb 



12-20 mm. wide. 9. P. Kelseyi. 



Leaves oblong or broadly linear with a more or less thickened and car- 

 tilaginous margin. 

 Leaves linear, 1-2 cm. long ; margins not very thick ; corolla-tube twice 



as long as the calyx ; young stems white-angled. 9. P. Kelseyi. 

 Leaves oblong with very thick margins, 7-12 mm. long; corolla-tube 

 not twice as long as the calyx ; young stems not white-angled. 



10. P. alyssifolia. 

 Intercostal portion of the calyx replicate. 



Leaves long-attenuate, not thick ; only upper portion of the plant glandular ; 



corolla scarcely twice as long as the calyx. n. P. longi folia. 



Leaves obtusish or abruptly acute, thick and firm ; corolla-tube fully twice as 

 long as the calyx; plant conspicuously glandular. 12. P. Stansburyi. 



1. Phlox bryoides Nutt. On dry hills from Neb. and Wyo. to Colo, and 

 Utah. Livermore, Larimer Co. 



2. Phlox canescens T. & G. On dry hills from Mont, to Colo, and Calif. 

 Colorado, according to Gray, but doubtful. 



3. Phlox andicola Nutt. In sandy soil and on hills from S. D. and Ida. 

 to Colo. Pike's Peak; Ouray. 



4. Phlox multiflora A. Nelson. In the mountains from Mont, to Colo. 

 Alt. 5000-10,000 ft. North Boulder Peak; mountain near Veta Pass; Jack's 

 Cabin, Gunnison watershed; Columbine; west of Ft. Collins; Rist Canon; 

 North Park; Minturn; Beaver Creek. 



5. Phlox depressa (E. Nels.) Rydb. (Phlox multiftora depressa E. Nels.) 

 In the mountains from Mont, and Ida. to Colo. " Colorado." 



6. Phlox scleranthifolia Rydb. On mountain sides from S. D. and Mont, 

 to Colo. Alt. 10,000-13,000 ft. West Spanish Peak. 



7. Phlox condensata (A. Gray) E. Nelson. (P. caespitosa condensata A. 

 Gray) In the mountains of Colo. Alt. 12,000-13,000 ft. Uncompahgre 

 Peak; headwaters of Clear Creek; Sierra Blanca; mountains above Como; 

 Alpine Tunnel; northwest of Como; Boreas. 



8. Phlox caespitosa Nutt. On rocky hills and mountains from Mont, and 

 B. C. to Colo, and Ore. Alt. 10,000-13,000 ft. West Spanish Peak; 

 Mt. Hesperus ; northwest of Como. 



9. Phlox Kelseyi Britton. In valleys from N. D. and Mont, to Colo. Alt. 

 up to 12,000 ft. Little Kate Basin, La Plata Mountains. 



10. Phlox alyssifolia Greene. On hills from S. D. and Ass. to Colo. 

 Exact locality not given (Hall & Harbour'). 



