POLEMONIACEAE. 27o 



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



cm. high. 4. P. multiHora. 



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



5. P. depressa. 

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



6. P. scleraiithifolia. 

 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. 11. P. longifolia. 



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 Cafion; 

 North Park ; Minturn ; Beaver Creek. 



5. Phlox depressa (E. Nels.) Rydb. {Phlox multiflora 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). 



