684 ^ POLEMONIACEAE 



Intercostal portion of the cah^c not replicate. 



Plants conspicuously cespitose. less than 1.5 dm. high. 



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



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

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



TT IVTt^t ttt^TjOT? at*^ 



Leaves hispid-ciUate 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- 



Di + ^ .^^"^ margms. IV. Alboalirginatae. 



Flants suffrutescent at the base. 3-10 dm. high. VI Specios\e 



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; coroUa-tube twice as long as the calyx. 

 T , . . 1. P. bryoides. 



l^eaves appressed, not conspicuously 4-ranked; corolla-tube slightly if at all exceeding 



tne calyx. 2 P muscoides 



Leaves subulate, acerose, sparsely arachnoid. 



CoroUa small; its limb 8-10 mm. wide. .^ 



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



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



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



-D, * ^ , , , II- MULTIFLORAE. 



Plant not glandular. 



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



Calyx and the ba^es of the leaves arachnoid-hairy. 5. P. andicola. 



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



Caljrs more than 1 cm. long; leaves flat, the margins not revolute; stem 5-10 



cm. high Q^ p^ j^fuUiflora. 



<^aiyx less tnaa 1 cm. long; leaves very narrow, with revolute margins. 

 htem 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 G-8 mm. long. 



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



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

 tascicles or branches subulate. 10. p. diffusa. 



w.^^ CoroUa-lobes 4-5 mm. long. H. p. glabrala. 



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; coroUa-limb about 8 mm. wide. 



T ^. 13. P. condensata. 



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



i^eaves linear, flat; margins only sUghtly revolute. 14. P. caespitosa, 



T ^« J-'eaves acerose-subulate; margins strongly revolute. 15. P. rigida. 



J^eaves more than 1 cm. long; plant cespitose, but not pulvinate; coroUa-hmb 12-20 



mm. wide. *^ ' ^ 



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



T^^ ,. . . 12. P. Doxiqlasii. -^ 



i^^ves Unear; margms scarcely revolute; corolla usually pinkish or purplish. 



16. P. Kclseyi, 



IV. ALBOMARGrNATAE. 



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



unear, 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. KelseyL 



iT.^.,^ ?K^ ^^-^ ^^^^ ^^^ margins. 7-12 mm. long; corolla-tube not twice as 

 Pi^nfc ?^L^ *^^ P.^^^'J ^9^^ ^^^"^ ^^^ white-angled. 17. P. alysslfolia, 



Flants denselj pulvmate, less than 3 cm. high; leaves ovate-oblong, less than 5 mm. 



long, with very thick margins. 

 1* lowers peduncled: corolla-tubo over 1 cm. long, more than twice as long as the 

 densely glandular calyx. ^' 18. p. albomarginata. 



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



19. P. diapensioides. 



V. LONGIFOLI 



Pi=.^J? 1 V? ^^ ^Vi^ *^® ^PPer portion, peduncles, and calyces pubescent. 



I'laut glabrous throughout, or rarely with a few scattered hairs on the calyces i 



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

 x>\^r.+ 11 1. 20. p. linearifoha. 



i-ianx usuauy pubescent above, in one variety even glandular; calyx-teeth shoj 



than the tube; leaves over 2 nun. wide. 21. P. longifolia. 



