VOL. 2] Milliken. Ualvforniun Polemoniaceae. 13 



1). Leaves with expanded blade at the apex, this tapering at each 

 end and bearing small sharp teeth. 8. N. setiloba. 



c. Upper leaves and bracts twice pinnatifid, pinnae very fine and 

 numerous, appearing netted. 9. N. tagetina. 



(1. Soft-pubescent bracts scarious at the broad base, the many teeth 

 spinescent; seeds one in each cell, or a second aborleji_one . 



10. N. pubescens. 



e. Viscid-pubescent and noxious scented; bracts broad at the base, 



divisions extending at various angles. 11. N. squarrosa. 



f. Viscid but sweet-scented, smaller than the preceding. 



12. N. mellita. 



g. Leaves and bracts broad, entire except for few pinnae at the 



base. 13. N. helerodoxa. 



li. Stems slender, wiry; leaves linear, entire except one or two 



pairs of short pinnae at the base. 14. N. filicaulis. 



i. Less slender than the last; leaves pinnate below and toothed 



above, capsule four-angled at the apex. 15. N. milracarpa. 

 j. Bracts with three to five rigid, acerose, divaricate divisions; 



flowers in many small heads ; corolla shorter than the longest 



calyx lobes, persistent on the mature capsule. 



16. N. divaricata. 

 k. Flowers in loose glomerules; flowers short -pedunculate, corolla 



yellow. 17. N. Breweri. 



L Leaves with linear rachis, bracts dilated, with spinose pinnae, 



double or triple. 18. N. subuligera. 



m. Viscid-pubescent; leaves with narrow oblong rachis and few 



pinnae, bracts considerably dilated; flowers deep blue, large. 



19. N. viscidula. 

 n. Viscid; leaves very rigid and more or less coriaceous, lobes 



wholly spinose. 20. N. atractyloides . 



o. Leaves very broad, not coriaceous, and lobes not wholly white 



spinose. 21. N. foliacea. 



/>. More slender than the last, three spinose teeth near the apex of 



the leaves and bracts, strongly recurved or hooked. 



22. N. hamata. 



1. Navarretia prostrata Greene. Oilia prostrata Gray. Navar- 

 retia involucrata R. and P. 



Annual, prostrate, with radiating branches making the plant 

 six inches across, glabrous except the inflorescence which is 

 puberulent; leaves and bracts one or two inches long, lax, with 

 narrow strap-shaped rachis, and slender pinnae four or five lines 

 long; primary inflorescence sessile and near the ground, large, 

 radiating branches ending in smaller heads; calyx two lines 

 long, four lobes short and entire, one longer, with one or two 

 teeth, all pungent-tipped; corolla about twice the calyx, slender 



