POLEMONIACEAE. 199 



Shrubs; leaves acerose. G. pungens. 



Herbs; leaves not acerose. 

 Perennials or biennials. 



Flowers large, usually scarlet, in an elongated panicle. G. aggregata. 

 Flowers rather small, white or whitish, in a corymb. G. nullallii. 

 Annuals. 



Leaves all alternate. G. capitata. 



Leaves or some of them opposite. 



Leaves all opposite, dissected into filiform seg- 

 ments. 

 Corolla almost rotate, 8-10 mm. broad. G. pharnaceoides. 



Corolla tubular-funnelform. G. harknesii. 



Leaves all entire; the lower opposite, the upper 

 alternate. 

 Stems simple below; flowers 8-10 mm. long. G. gracilis. 

 Stems branched from the base ; flowers 5-7 mm. 



long. G. humilis. 



Gilia pungens hookeri (Dougl.) Gray. Shrubs with tufted branches; very 

 leafy stems 10-30 cm. high, more or less glandular above; leaves strict, alter- 

 nate except the lowest, 3-7-palmately parted with acerose segments; flowers 

 sessile, solitary in the upper leaf-axils; bracts shorter than the calyx which is 

 tubular, glandular-ciliate, with subulate teeth; corolla rose-colored, white or 

 yellowish, tubular; stamens unequally attached to the corolla, scarcely ex- 

 serted; capsule oblong, shorter than the calyx. Spokane. Common in the 

 sagebrush region. 



Gilia aggregata (Pursh) Spreng. Biennial, loosely pubescent throughout 

 or rarely puberulent-viscid above, 30-80 cm. high, simple or sparingly branched ; 

 leaves 4-6 cm. long, pinnately parted into many linear mucronate lobes, 1-2 

 cm. long; panicle narrow, loose or interrupted; calyx glandular, the subulate 

 lobes twice as long as the tube; corolla showy, scarlet, tubular-funnelform, 

 much exceeding the calyx, 3 cm. long, the lobes spreading or recurved, ovate- 

 lanceolate, acute or acuminate, about 1 cm. long; stamens unequally inserted; 

 seeds numerous in each cell, the coats developing spiricles when wetted. 

 Common on stony hillsides. 



Gilia nuttallii Gray. Perennial, tufted from a woody base, somewhat 

 puberulent; stems erect, 10-30 cm. high, mostly simple; leaves sessile, opposite, 

 palmately parted into 3-7 segments, these linear, somewhat rigid, mucronate, 

 scabrous, 1-2 cm. long; flowers in a terminal dense cluster; calyx-lobes subulate- 

 lanceolate, rigid; corolla white, with yellow throat, the tube puberulent at the 

 outside, not exceeding the calyx, the lobes obovate, 6-7 mm. long; ovules 2 

 in each cell. In sterile soil, Blue Mountains. 



Gilia capitata Hook. Annual, glabrous or nearly so; stems slender, erect, 

 loosely branched, 20-60 cm. high; leaves alternate, once or twice pinnately 

 divided into very narrow segments; flowers pale blue, in dense globose clusters 

 terminating long naked peduncles; calyx-lobes lanceolate-acuminate, about as 

 long as the tube; corolla 8-10 mm. long, the oblong or linear lobes as long as 

 the tube, which is but little dilated in the throat; seeds developing mucilage 

 and spiracles when wetted. Sandy soil, banks of Snake River and on the 

 north fork of Latah Creek. 



Gilia pharnaceoides Benth. Annual; stems very slender, usually loosely 

 branched above, 10-20 cm. high, somewhat puberulent; leaves all opposite, 

 all palmately parted into 2-5 filiform segments, 5-12 mm. long; pedicels 

 filiform; calyx campanulate, 4 mm. long, the triangular acute lobes shorter 

 than the tube; corolla white or bluish, rotate, about 6 mm. broad, pubescent 

 in the throat, the lobes broadly obovate; ovules 6-8 in each cell; seed coats 

 becoming mucilaginous when wetted. In gravelly or sandy soil, abundant in 

 Spokane County. 



