6 4 



POLEA1ONIACEAE. 



VOL. III. 



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

 lute lobe. Corolla tubular-funnelform 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 15 species, natives of western America. Besides the following typical one, some 10 

 others occur in the western United States and British Columbia. 



i. Collomia linearis Nutt. Narrow-leaved 

 Collomia. Fig. 3482. 



Collomia linearis Nutt. Gen. i : 126. 1818. 



Cilia linearis A. Gray, Proc. Am. Acad. 17: 223. 1882. 



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

 ple or branched, slender, 3'-i8' high. Leaves linear- 

 oblong, lanceolate or linear-lanceolate, entire, acumi- 

 nate at the apex, narrowed at the. base, sessile, or 

 the lower short-petioled, i'-2i' long, i4"-6" wide ; 

 flowers s"-7" long, numerous in terminal capitate 

 leafy-bracted clusters; calyx-lobes triangular-lanceo- 

 late, 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 California. Also 

 in Quebec and New Brunswick. May-Aug. 



7. NAVARRETIA R. & P. Fl. Per. 2 : 8. 1799. 



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-angled, 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 i-3-celled, dehiscent or indehiscent. 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 20 others occur in 

 the western United States. Type species : Navarretia involucrata R. & P. 



i. Navarretia minima Nutt. Small Navar- 

 retia. Fig. 3483. 



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

 (II.) i : 160. 1848. 



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



Depressed, tufted, somewhat pubescent ; stem usu- 

 ally branched, i'-3' high. Leaves sessile, i'-i' long, 

 i-2-pinnatifid into almost filiform rigid acicular seg- 

 ments; flowers about 2" long, white, densely capi- 

 tate ; calyx-lobes awl-shaped, mostly toothed, about 

 as long as the tube and equalling the corolla, the 

 sinuses more or less white-pubescent; calyx-tube 

 about equalling the indehiscent i-6-seeded capsule. 



In dry soil, Nebraska and South Dakota to Washing- 

 ton and Arizona. Summer. 



