42 



POLEMONIACEAE. 



[Vol. Iir. 



lobes lanceolate or triangular, entire, erect, the sinuses often at length enlarged into a revo- 

 lute lobe. Corolla tubular-funnelforra or salverform, the limb 5-lobed, spreading, the lobes 

 obtuse. Stamens unequally inserted on the tube of the corolla, mostly straight, the filaments 

 unequal. Ovules i or few in each cavity. Capsule oval to obovoid. 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 America. Besides the following, some 6 others occur in 

 the western United States and British Columbia. 



I. CoUomia linearis Nutt. Narrow- 

 leaved Collomia. (Fig. 2994.) 



CoUomia linearis Nutt. Gen. i: 126. :8i8. 

 Gilia linearis A. Gray, Proc. Am. Acad. 17: 223. 



1882. 



Annual, viscid-puberulent; stem erect, leafy, sim- 

 ple or branched, slender, 3'-l8' high. Leaves 

 linear-oblong, lanceolate or linear-lanceolate, en- 

 tire, acuminate at the apex, narrowed at the base, 

 sessile, or the lower short-petioled, x'-iYz' long, 

 \yj'-(i" wide; flowers 5"-^" long, numerous in 

 terminal capitate leafy-bracted clusters; calyx-lobes 

 triangular-lanceolate, acute; corolla light purple or 

 nearly white, the tube very slender, longer than the 

 calyx, the lobes i"-2" long; capsule at maturity 

 about as long as the calyx. 



In dry soil, Manitoba to Minnesota and Nebraska, 

 west to British Columbia, Arizona and CiUfomia. 

 Also in New Brunswick. May-Aug. 



5. NAVARRETIA R. & P. Prodr. Fl. Per. 20. 1794. 



Annual glabrous or viscid-pubescent herbs, with alternate spinose-pinnatifid leaves, or 

 the lowest entire, and numerous small flowers in dense terminal bracted clusters. Calyx 

 prismatic or obpyramidal, the tube 5-anglcd, 5-cleft, not accrescent in fruit, not distended by 

 nor ruptured by the ripening capsule, the sinuses scarious, the lobes mostly unequal, erect or 

 spreading, spiny-tipped, entire, or often toothed. Corolla tubular-funnelform or salverform, 

 5-lobed, the lobes oval or oblong. Stamens straight or declined, equally inserted in or below 

 the throat of the corolla. Ovary 2-3-celled; ovules solitary, few or several in each cavity. 

 Capsule 1-3-celled, dehiscent or iudehiscent. Seeds mostly mucilaginous and emitting spiral 

 threads when wetted. [In honor of Navarrete, a Spanish physician.] 



About 24 species, natives of western America. Besides the following, some 22 others occur in 

 the western United States. 



I. Navarretia minima Nutt. Small 

 Navarretia. (Fig. 2995.) 



Navarretia minima Nutt. Journ. Acad. Nat. Sci. Pliila. 

 (11.) i: 160. 184S. 



Gilia minima A. Gray, Proc. Am. Acad. 8: 269. 1870. 



Depressed, tufted, somewhat pubescent; stem 

 usually branched, I'-j' high. Leaves sessile, ^'- 

 i' long, i-2-pinnatifid into almost filiform rigid 

 acicular segments; flowers about 2" long, white (? ), 

 densel)- capitate; calyx-lobes awl-shaped, mostly 

 toothed, about as long as the tube and equalling 

 the corolla, the sinuses more or less white-pubes- 

 cent; calyx-tube about equalling the indehisccnt 

 1-6-seeded capsule. 



In dry soil, Nebraska and South Dakota to Washing- 

 ton and Arizona. Summer. 



