694 POLEMONIACEAE 



me tuoe , coroua &yb mm. long, white; lobes oval, 2 mm. long. Sandy places: 

 e Colo.— Utah— Ariz. Son. My-Je. 



15. G. depressa M. E. Jones. Stem erect, divaricately branched, 5-10 cm. 

 high, cnsp-pubescent; leaves entire or with a few teeth above the middle; flowers 

 cjTnose, more or less clustered towards the ends; bracts oblanceolate, acute; 

 calyx campanulate; teeth subulate, equalling the tube; corolla 6 mm . long, white ; 



i'r^^^-^ ™™- ^°^^' °'^^^' ^c^^-e- Desert regions: Utah— Ariz.— Calif. Son. 

 My-Je. 



16. G. pumila Nutt. Stem erect, branched, 1-2 dm. high, crisp-hairy; 

 leaves pinnatifid, with few Hnear divisions, cuspidate, sparingly crisp-hairy; 

 Howers in small terminal heads; calyx-lobes subulate, shorter than the tube, 

 cuspidate; corolla 9-10 mm. long; tube twice as long as the calyx; lobes oval, 2 

 mm. long. Dry hills: w Tex.— Wyo.— Utah— Ariz. Son.—Submont. My-Au. 



r iJ^' ^- .PP^cladon Torr. Stems ascending or erect, branched at the base, 

 5-lU cm. high; leaves mostly basal, rosulate, pinnatifid, crisp-hairy, with oblong 

 divisions, cuspidate; stem-leaves few or none; flowers in small terminal heads; 

 bracts d-cleft at the apex; calyx glandular-puberulent; sepals lanceolate, cuspi- 

 date, shorter than the tube; corolla white, 4-5 mm. long, exserted; lobes scarcely 

 1 mm. long. Desert regions: w Tex.— Colo.— Nev.— Ariz. Son. Ap-Je. 



18. G. capitata Dougl. Stem erect, simple, or virgately branched, gla- 

 brate or nearly so l.,>;6 dm. high; leaves glabrous or arachnoid at their bases, 

 bi- or tri-pinnatifid, with hnear segments; flowers capitate at the ends of the 

 branches; calyx glabrous or slightly puberulent; teeth subulate, equalling the 

 tube; corola light blue or white, short-trumpet-shaped, nearly funnelform; lobes 

 hnear or oblong, equalling the tube. Hills and plains : Alaska— Ida.— Calif . 

 Son. — Subrnont. My-Jl. 



19. G. arizonica (Greene) Rydb. Stem 2-4 dm. high, more or less crisp- 

 hairy and glandular-puberulent; leaves crisp-hairy, pinnatifid, with rather ap- 

 proximate hnear lobes, obovate in outline; calyx-teeth deltoid-lanceolate, gradu- 

 ally cuspidate; corolla 2.5-3 cm. long. CalUderis arizonica Greene. Dry regions : 



Ariz.— s Utah. Son. Je. 



20. G. tenuituba Rydb. Stem about 3 dm. high, glandular-puberulent; 

 leaves pinnatihd into linear, puberulent, cuspidate divisions; calyx glandular- 

 puberulent, scarious in the sinuses; corolla flesh-colored, 4 cm. long; tube 1 mm. 

 thick below, 2 mm. at the throat; lobes 1 cm. long. Dry soil: s Utah. Son. 



21. G. aggregata (Pursh) Spreng. Stem erect, 3-5 dm. high, more or less 

 puberulent, simple up to the inflorescence ; leaves pinnatifid into narrowly linear 

 divisions, more or less crisp-hairy; calyx-lobes lanceolate, attenuate, spinulose- 

 tipped; corolla 3-4 cm. long, crimson to white; lobes 7-9 mm. long, lanceolate. 

 C aUisten.^ aggregata and C.flavida Greene. Skyrocket. Hills, glades, and mead- 

 ows: Mont.— N.M.—Cahf.— B.C. Suhmont.—Mont. My-Au 



22. G. pulchella Dougl. Stem erect, simple up to the inflorescence, more 

 or less crisp-hairy as well as glandular-puberulent, 3-6 dm. high; leaves pinnatifid 

 into hnear divisions, crisp-hairy; calyx-lobes narrowly lanceolate, attenuate, 

 with, spinulose spreading tips; corolla crunson to white, 3-4 cm. long; lobes 

 lanceolate, attenuate-acuminate. G. aggregata altenuata A. Gray. G. altenuata 

 A. ^ els. and CaUislens altenuata Greene, the white-flowered form. Skyrocket. 

 Upen hills and plains: ^lont.— Colo.— Nev.— Wash. Submonl.—Mont. My- 



^, ^^' i^\ scariosa Rydb. Stems simjjle, strict, 3-6 dm. high, glandular- 

 puberulent throughout; leaves pinnatifid into hnear-filiform spinulose-tipped 

 envisions, niore or less white-villous when young, glandular-puberulent; calyx- 

 tube about G mm. long, puberulent; teeth short, broadly rounded-ovate, abruptly 

 subulate-acuminate; corolla pink, 3-4 cm. long; lobes acute, about 8 mm. long. 

 C allisteris colhna Greene. Open hills: Colo.— Utah. Subrnont.— Mont. Jl-S. 



^i^^f' ^' /^^^^^ Rydb. Biennial or perennial; stems ascending or erect, 

 sunple, 4-6 dm. high, leafy; leaves rather fleshy, divided into Hnear-filiform, 

 spmuiose-tipped segments: calvx e'landiilar-niiKoar.oT,f oKr^.t s mrr, lone-: lobes 



