POLEMONIACEAE. 201 



15-23, oblong-ovate, 1-3 cm. long; flowers blue, the close clusters panicled; 

 calyx-lobes lanceolate, about equalling the tube; corolla about 2 cm. broad, 

 the obovate lobes longer than the tube; filaments hairy at base; capsules 6-10- 

 seeded. In wet places at Marshall, Spokane County, and along the St. Maries 

 river in Idaho. 



Polemonium pectmatum Greene. Perennial, the base somewhat woody, 

 smooth and glabrous except the viscid-glandular inflorescence; stems erect, 

 50-100 cm. high; leaflets narrowly linear, 11-15, obtuse or acutish, 2-3 cm. 

 long; inflorescence a rather compact compound cyme; corolla bluish or bluish- 

 purple. A rare species known definitely only from the vicinity of Rock Lake, 

 Sandberg and Leiberg. 



294. NAVARRETIA. 



Glabrous or viscid-pubescent annual herbs ; leaves all alternate, 

 pinnatifid, setaceous or spiny; flowers crowded in bracteate 

 clusters on the ends of the branches; calyx-tube scarious, the ribs 

 prolonged into unequal bristle-tipped lobes; corolla tubular; 

 capsule 1-3-celled, 1-many-seeded. 



Herbage glandular-viscid with a bad odor. N. squarrosa. 



Herbage neither glandular nor with a bad odor. N. inierlexta. 



Navarretia squarrosa (Esch.) H. & A. Skunk Weed. Annual, glandular, 

 erect or spreading, simple or much branched, 10-30 cm. high, very leafy; 

 leaves mostly alternate, pinnately parted and the segments cleft or parted, 

 the lobes sharp pointed, the upper ones and the bracts becoming spine-like; 

 calyx-lobes subulate, spiny-tipped, usually entire, longer than the tube; 

 corolla pale blue, 8-10 mm. long, the tube shorter than the calyx, the limb 

 small; stamens included; ovules 8-12 in each cell. Along roadsides, rare in 

 our limits, very ill-smelling. 



Navarretia intertexta (Benth.) Hook. Annual; stems erect and simple 

 below or more commonly much branched and spreading, 5-15 cm. high, 

 pubescent ; leaves all alternate, once or twice pinnately cleft into linear spines- 

 cent lobes, glabrous or nearly so; flowers crowded in head-like clusters, the 

 bracts and calyx-tube villous with white hairs; calyx-lobes more or less cleft 

 into spinose divisions; corolla tubular, funnelform, pale blue, equalling the 

 calyx-lobes, 5-6 mm. long; stamens exserted; ovules and seeds 3 or 4 in each 

 cell; seed-coats developing spiricles. Common in low ground. 



295. COLLOMU. 



Herbs with alternate entire leaves ; calyx not distended by the 

 capsule, obconical, the lobes not spine-tipped; corolla tubular 

 funnelform, with open throat and a spreading limb of short obtuse 

 lobes; stamens unequally inserted on the corolla tube; capsule 

 narrowed at the base; seeds usually 1 in each cell, mucilaginous 

 and forming spiricles when wetted. 



Corolla salmon-color, 2-3 cm. long. C. grandiflora. 



Corolla pink, 1 cm. long. C. linearis. 



Collomia grandiflora Dougl. Annual, erect, usually simple, 30-40 cm. 

 high, viscid-glandular below; leaves sessile, all alternate, lanceolate or linear. 



