FLOWERING PLANTS AND FERNS OF ARIZONA 803 



9. Glands on the corolla stalked; throat somewhat ampliate; 

 staminode bearded; southern Arizona (10 . 

 10. Corolla 15 to 20 mm. Ions, rose magenta, rather broadly 

 funnelform; cauline leaves narrowly lanceolate to 

 lance-oblong, not blackening on drying. 



9. P. PARRYI. 



10. Corolla 20 to 25 mm. long, carmine to scarlet, narrowly 

 funnelform; cauline leaves broadly ovate to oblong- 

 ovate, large, blackening on drying— 10. P. SUPEBBUS. 



1. Corolla whitish, pink, lavender, blue, or blue purple (never scarlet, carmine, or 

 yellow) or, if reddish, then the leaves toothed (11 . 

 11. Leaves, at least a few of them, toothed, sometimes (in P. jamesii very 

 obscurely so; corolla glandular externally (12). 

 3 2. Blades obscurely denticulate, none perfoliate; plants not glaucous, less 

 than 60 cm. high; calyx lobes lance-oblong to attenuate, 7 to 12 mm. 

 long; inflorescence glandular-pubescent; corolla purple or blue 

 purple (13 . 

 13. Corolla villous but not glandular within, the lower lip projecting, 

 exceeding the upper lip; staminode bearded only apically; anther 

 sacs dehiscent throughout but not explanate through the connective. 



11. P. WHIPPLEANUS. 



13. Corolla glandular within, the lower lip reflexed, about equaling the 

 upper lip; staminode bearded most of its length; anther sacs 

 peitately explanate (14). 

 14. Leaves large, ovate, obviously toothed; corolla more than 35 mm. 

 long, the throat abruptly much inflated, not villous within. 



12. P. COBAEA. 



14. Leaves smaller, linear-oblanceolate, some of them obscurely toothed, 

 usually many of them entire; corolla up to 22 mm.* long, the 



inflated throat villous within 13. P. jamesii. 



12. Blades conspicuously toothed, the uppermost leaves connate-perfoliate; 



plants glaucous or glaucescent (often green in one subspecies of 



P. pseudospectabilis), 60 to 140 cm. high; calyx lobes mostly ovate, 



4 to 6 mm. long (15 . 



1 5. Corolla abruptly inflated from a tube not longer than the calyx, strongly 



bilabiate, 10 to 20 mm. wide, white tinged with pink; staminode 



long-bearded, exserted, uncinate- ■. 14, P. palmeri. 



15. Corolla gradually inflated from a tube twice longer than the calyx, 

 nearly regular, narrower, deep pink to ro.-e purple; staminode 

 included or barely ex.-erted. straight (16). 

 ]('). Throat of the corolla definitely ventricose, 9 to 12 mm. wide; in- 

 florescence usually leafy below, frequently interrupted 1)}- long 



internodes 15. P. glutei. 



16. Throat of the corolla moderately ampliate, 6 to 9 mm. wide; in- 

 florescence not leafy, rarely interrupted (17 . 

 17. Staminode glabrous; throat not villous at the lower lip; anther 



sacs scarcely as long as wide 16. P. pseudospectabilis. 



1 7. Staminode bearded; throat sparsely villous at the lower lip; anther 



sacs longer than wide 17. P. bicolor. 



11. Leaves always entire (18). 



18. Herbage blue glaucous or obviously glaucescent, glabrous; leaves cori- 

 aceous lanceolate or wider; staminode bearded 1'.' . 

 19. Corolla strongly bilabiate, lavender, the throat about 10 mm. wide, 

 pilose at the orifice; inflorescence paniculate with long internodes, 



the divergent peduncles 1 to 3 cm. long IS. P. xudifloru<. 



19. Corolla nearly regular, the throat 4 to 7 mm. wide; inflorescence an 



interrupted thyrse of yerticillasters, the peduncles erect and very 



short, or suppressed (20 . 



20. Corolla nearly tubular, blue; verticillasters few-flowered and rather 



open, all very short-bracteate, the inflorescence appearing bare. 



19. P. fexdleri. 

 20. Corolla more or less ampliate; verticillasters dense, the lower ones 

 prominently bracteate (21). 

 21. Staminode bearded most of its length with long fine pale-yellow 

 hairs, not dilated; corolla deep blue purple, nearly glabrous at 

 the orifice; calyx lobes acute, scarious-margined nearly through- 

 out; cauline leaves mostly obtuse or rounded at apex. 



20. P. PACHYPHYLLVS. 



