PCLEMONIA CEAE. 761 



inserted in or below the sinuses of ihe corolla; ovules 1-4 in each cavity. In dry 

 soil. Neb. and Colo, to Gal., Mont. ;nd Ore. May- Aug. 



8. Gilia pumila Nutt. Low GILIA. (I. F. f. 2990.) Annual, woolly at 

 least when young, 0.7-2 dm. high. Leaves thick, 1-2.5 mm - l n g> pinnately 

 divided into mucronulate sometimes lobed segments, or the uppermost entire; flowers 

 in dense cymes; corolla 6-8 mm. long, its tube about 3 times the length of the lobes; 

 calyx-lobes awn-like; stamens inserted in or below the sinuses of the corolla; ovules 

 5 or 6 in each cavity. In dry soil, Neb. to Tex., Nev. and N. Mex. April-June. 



9. Gilia tricolor Benth. TRICOLORED GILIA. (I. F. f. 2991.) Annual, 

 viscid puberulent, at least above; stems 1.5-5 ^ m - high- Leaves slender-petioled, 

 or the upper sessile, 2 3-pinnately divided into acute segments; flowers short- 

 pedicelled, 10-14 mm - l n g> m simple cymes; calyx-lobes triangular- lanceolate, 

 acute or acuminate; corolla campanulate-funnelform, 2-3 times as long as the 

 calyx, its tube yellowish, short, the throat brown-purple, the oval to orbicular lobes 

 lilac or violet; ovules several in the cavities; seeds mucilaginous and emitting 

 spiral threads when wetted. Escaped from gardens to roadsides at Lincoln, Neb. 

 (according to Webber). Native of Cal. April -May. 



10. Gilia acerosa (A. Gray) Britton. NEEDLE-LEAVED GILIA. Perennial, 

 glandular-puberulent, 8-15 cm. high, bushy-branched. Leaves pinnately parted 

 into 3-7 acicular segments; pedicels slender, 2 cm. long or less; corolla nearly 

 rotate, 2 cm. in diameter, or less; filaments filiform; anthers oblong. Dry soil, 

 Kans. to Tex., Mex. and N. Mex. \G. ri^idula acerosa A. Gray.] 



3. POLEMONIUM L. 



Perennial or rarely annual herbs, with alternate pinnate leaves, and mostly 

 large cymose-paniculate or thyrsoid flowers. Calyx herbaceous, campanulate, 5- 

 cleft, accrescent in fruit, the segments entire, erect, or connivent over the capsule. 

 Corolla tubular-campanulate or tubular-funnelform, rarely rotate, the limb 5-lobed. 

 Stamens about equally inserted near the base of the corolla, declined. Ovary ovoid; 

 ovules few or several in each cavity. Capsule ovoid, obtuse, 3-valved. Seeds 

 mucilaginous and emitting spiral threads when wetted. About 15 species, natives 

 of the north temperate zone. Besides the following, some 10 others occur in west- 

 ern N. Am. 



Anthers exserted ; flowers 16-20 mm. broad ; stem erect. i. P. Van Bruntiae. 



Anthers included ; flowers 10-12 mm. broad ; stem reclining. 2. P. reptans. 



1. Polemonium Van Bruntiae Britton. AMERICAN JACOB'S LADDER. (I. 

 F. f. 2992.) Rootstock stout, horizontal. Stems somewhat glandular-pubescent 

 above, 3-7.5 dm. high, leafy to the top; leaflets of the lower leaves 15-19, ovate 

 or lanceolate, acute, 1-4 cm. long, the uppermost leaves 3-5-foliolate or simple; 

 cymose clusters rather loosely 3 5-flowered; flowers bluish purple; corolla-lobes 

 rounded; calyx much enlarged in fruit, the lobes acute; ovules 3 or 4 in each 

 cavity. In swamps and along streams, Vt. and northern N. Y. to Md. May-July. 



2. Polemonium reptans L. GREEK VALERIAN. (I. F. f. 2993 ) Glabrous 

 or very nearly so, usually not more than 3 dm. high; stems weak, at length reclin- 

 ing or diffuse, the rootstock short. Leaflets oblong, ovate-oblong, or lanceolate- 

 oblong, the uppermost leaves 3-5-foliolate or simple; flowers blue; calyx 5-lobed; 

 ovules 3 or 4 in each cavity. Woods, N. Y. to Minn., Ga. and Kans. April-May. 



4. COLLOMIA Nutt. 



Annual or rarely perennial herbs, with alternate leaves, and capitate or cymose 

 flowers. Calyx obpyramidal or cup-shaped, 5-cleft, scarious in the sinuses, accres- 

 cent in fruit, not distended nor ruptured by the ripening capsule, its lobes entire, 

 erect, the sinuses often at length enlarged into a revolute lobe. Corolla tubular- 

 funnelform or salverform, the limb 5-lobed, the lobes obtuse. Stamens unequally 

 inserted on the tube of the corolla, the filaments unequal. Seeds of most species 

 mucilaginous and emitting spiral threads when wetted. [Greek, gluten, referring 

 to the glutinous seeds when wetted.] About 10 species, natives of western Am. 

 Besides the following, some 6 others occur in the western U. S. and Br. Col. 



