684 POLEMONIACEAE 



Intercostal portion of the calyx not replicate. 



Plants conspicuously cespitose, less than 1.5 dm. high. 



Leaves beset with cobwebby hairs ; plants densely pulvinate-cespitose. 



I. CANESCENTES. 



Leaves not cobwebby, except sometimes slightly so at the base. 

 Leaves glabrous, or merely cobwebby at the base, not glandular. 



II. MULTIFLORAE. 



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

 Leaves linear to subulate, not with thickened margins. 



III. CAESPITOSAE. 



Leaves oblong or broadly linear, with more or less thickened and cartilag- 

 inous margins. IV. ALBOMARGINATAE. 

 Plants suflrutescent at the base, 3-10 dm. high. VI. SPECIOSAE. 

 Intercostal portion of the calyx replicate. V. LONGIFLORAE. 



I. CANESCENTES. 

 Leaves ovate to lanceolate, densely arachnoid-lanate, mucronate-tipped, but scarcely 



Leaves ovate, distinctly 4-ranked, imbricate; corolla-tube twice as long as the calyx. 



1. P. bryoides. 

 Leaves appressed, not conspicuously 4-ranked; corolla-tube slightly if at all exceeding 



the calyx. 2. P. muscoides. 



Leaves subulate, acerqse, sparsely arachnoid. 

 Corolla small; its limb 8-10 mm. wide. 



Corolla-tube about twice as long as the calyx. 3. P. canescens. 



Corolla-tube slightly if at all exceeding the calyx. 4. P. Hoodii. 



Corolla middle-sized, its limb 10-15 mm. wide. 5. P. andicola. 



II. MULTIFLORAE. 

 Plant not glandular. 



Calyx more than 8 mm. long, its teeth longer than the tube. 



Calyx and the baes of the leaves arachnoid-hairy. 5. P. andicola. 



Calyx and stem finely villous or glabrous; leaves not arachnoid. 



Calyx more than 1 cm. long; leaves flat, the margins not revolute; stem 510 



cm. high. 6. P. multiftora. 



Calyx less than 1 cm. long; leaves very narrow, with revolute margins. 

 Stem and calyx glabrous or nearly so. 7. P. depressa. 



Stem and calyx decidedly villous. 8. P. costata. 



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

 Corolla-lobes 68 mm. long. 



Leaves all subulate-filiform. 9. P. scleranthi folia. 



Leaves of the stem broader, inclined to be linear-oblanceolate, those of the 



fascicles or branches subulate. 10. P. diffusa. 



Corolla-lobes 4-5 mm. long. 11. P. glahrata. 



Plant more or less glandular. 12. P. Douglasii. 



III. CAESPITOSAE. 



Leaves less than 1 cm. long; plant densely pulvinate-cespitose; limb of corolla seldom 



over 1 cm. broad. 

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



13. P. condensata. 

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



Leaves linear, flat; margins only slightly revolute. 14. P. caespitosa. 



Leaves acerose-subulate ; margins strongly revolute. 15. P. rigida. 



Leaves more than 1 cm. long; plant cespitose, but not pulvinate; corolla-limb 12-20 



mm. wide. 

 Leaves acerose-subulate; margins strongly revolute; corolla white. 



12. P. Douglasii. 

 Leaves linear; margins scarcely revolute; corolla usually pinkish or purplish. 



16. P. Kelseyi. 

 IV. ALBOMARGINATAE. 

 Plant cespitose, but not densely pulvinate, more than 3 cm. high; leaves obiong to broadly 



linear, 7-20 mm, long. 

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



the calyx; young stems white-angled. 16. 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. 17. P. alyssifolia. 



Plants densely pulvinate, less than 3 cm. high; leaves ovate-oblong, less than 5 mm. 



long, with very thick margins. 



Flowers peduncled: corolla-tube over 1 cm. long, more than twice as long as the 



densely glandular calyx. 18. P. albomarginata. 



Flowers subsessile; corolla-tube less than 1 cm. long, not twice as long as the calyx. 



19. P. diapensioides. 



V. LONGIFOLIAE. 



Plant glabrous or only the upper portion, peduncles, and calyces pubescent. 



Plant glabrous throughout, or rarely with a few scattered hairs on the calyces and 

 peduncles; calyx- teeth longer than the tube; leaves less than 2 mm. wide. 



20. P. linearifolia. 

 Plant usually pubescent above, in one variety even glandular; calyx-teeth shorter 



than the tube; leaves over 2 mm. wide. 21. P. longi folia. 





