682 POLEMONIACEAE 



blue or rose-colored, rarely white; stamens usually shorter than the corolla. 

 Mountains: Colo. N.M. Utah. Submont. Subalp. Je-Au. 



12. P. occidentale Greene. Stems leafy, solitary and rather simple, gla- 

 brous below, glandular-puberulent above, 3-9 dm. high; leaves glabrous or 

 sparingly pubescent; leaflets 15-27, ovate-oblong or lanceolate, rounded, oblique 

 at the base, acute at the apex, 1-4 cm. long; calyx glandular-puberulent, 7-8 

 mm. long; lobes oval, obtusish; corolla blue or violet, 10-12 mm. long, campanu- 

 late; stamens about as long as or longer than the corolla. Valleys and open 

 woods: Sask. Colo. Calif. Alaska. Submont. Mont. Je-Au. 



13. P. intermedium (A. Brand) Rydb. Stem solitary, 5-7 dm. high, puberu- 

 lent throughout and glandular above; leaflets 11-27, ovate-lanceolate to linear- 

 lanceolate, often somewhat falcate, 3-5 cm. long; calyx 6-7 mm. long; lobes 

 lanceolate; corolla blue, campanulate, 12-14 mm. long; lobes acutish; stamens 

 shorter than the corolla. P. occidentale intermedium A. Brand. Along streams: 

 Ida. Wash. B.C. Jl-Au. 



14. P. speciosum Rydb. Stem 1-2 dm. high, with 2-3 leaves; basal leaves 

 numerous, 8-15 cm. long, with wing-margined rachis; leaflets 13-25, ovate, 6-12 

 mm. long, acute; inflorescence capitate; calyx viscid-villous and glandular, 15-20 

 mm. long; lobes lanceolate, acute; corolla pale blue, deeply campanulate-funnel- 

 form, 2-2.5 cm. long; limb about 1.5 cm. broad. Mountains: Colo. Alp. Jl- 

 Au. 



15. P. viscosum Nutt. Stems several, viscid-pubescent, 5-10 cm. high, 

 erect; leaflets verticillate, 30-41, orbicular or nearly so, 1-4 mm. long; flowers 

 subcapitate; calyx campanulate, densely glandular, 8-10 mm. long; lobes lance- 

 olate; corolla blue or violet, 15-20 mm. long; lobes rounded; filaments sparingly 

 barbed. SKUNK-WEED. Mountains: Alta. Wyo. Utah Ida. Mont. Sub- 

 alp. Je-Au. 



16. P. Grayanum Rydb. Stems about 1 dm. high, glandular- villous; 

 leaflets verticillate, obovate or spatulate, 2-6 mm. long, obtuse; calyx about 18 

 mm. long, villous with white hairs; lobes linear-lanceolate; corolla about 2 cm. 

 long, campanulate-funnelform, with a wide tube; lobes rounded. High moun- 

 tains: Colo. Mont. Alp. Jl-Au. 



17. P. confertum A. Gray. Stems erect, 1-2 dm. high; leaflets verticillate, 

 30-40, orbicular to oblong, more or less viscid, 3-10 mm. long; flowers capitate 

 or spicate; calyx oblong-campanulate, fully 1 cm. long, densely glandular; lobes 

 lanceolate, acute; corolla blue or violet, 2-3 cm. long, funnelform. SKUNK-WEED. 

 Mountains: Wyo. N.M. e Utah. Mont. Alp. Jl-Au. 



18. P. mellitum (A. Gray) A. Nels. Stem 1-2.5 dm. high, leafy; leaflets 

 verticillate, 30-60, oval to almost linear, 5-10 mm. long; flowers racemose or 

 spicate; calyx glandular-puberulent, about 12 mm. long; lobes linear-lanceolate; 

 corolla white or cream-colored, about 3 cm. long. P. confertum mellitum A. 

 Gray. Mountains: Wyo. Colo. Mont. Subalp. Je-Au. 



19. P. Brandegei (A. Gray) Greene. Stem 1-3 dm. high, sparingly leafy, 

 glandular-puberulent; leaflets verticillate, 30-40, elliptic, 5-8 mm. long; flowers 

 racemose or spicate; calyx about 1 cm. long, glandular-puberulent; lobes linear- 

 lanceolate; corolla 2.5-3 cm. long, yellow or greenish yellow. Gilia Brandegei 

 A. Gray. Mountains: Colo. Utah. Mont. Subalp. Je-Au. 



2. COLLOMIA Nutt. 



Simple or branched, caulescent annuals. Leaves alternate, entire or pinna- 

 tifid. Flowers perfect, in subcapitate clusters, at the end of the stem or axil- 

 lary. Calyx obpyramidal, 5-cleft, scarious in the sinuses, not ruptured by the 

 capsule. Corolla funnelform or salverform, 5-lobed. Stamens 5, unequally 

 adnate to the tube of the corolla. Ovules solitary or rarely few in each cell. 

 Seeds developing both mucilage and spiracles when wetted. 



Annuals. 



Leaves entire, rarely denticulate. 



Floral leaves dilated, much broader than the rest; stamens inserted at different 

 heights. 



