SCROPnULAUIACEiB 93 



4. D. discolor, Bemh. Corolla purplish: capsule and stout prickles pubescent. 

 6. D. meteloides, DC. Leaves entire or repand, one-sided: capsule large. Si. CaL 



4. NICOTIANA, Toumefort. 



Very viscid, ill-scented herbs: flowers soon closing in sunshine. 



Corolla salverform, the limb 4 or 6 lines broad 1, 2 



Corolla tubular-funnelform, white; stamens unequally inserted 8, 4 



Very smooth glaucous shrub: corolla tubular, greenish yellow. 5 



1. N. Cleveland!, Gr. Corolla greenish white, violet tinged, an inch long. S. CaL 



2. N. attenuate, Torr. Calyx shorter: corolla longer, limb white. 



3. N. Bigelovii, Watson. Corolla 1-2 inches long, nearly as broad. 

 Vax. Wallacei, Gr. Corolla smaller: leaves often nearly clasping. S. Cal. 



4. N. quadrivalis, Pursh. Corolla broader than long: capsule globular. Or. E. 

 Var. multivalis, Gr. Corolla often 2 in. broad, 5-8-lobed: capsule large. Or. 



6. N. grlauca, Graham. Leaves long-petioled, subcordate. Naturalized. S. CaL 



6. PETUNIA, Ju83. 

 1. P. parviflora, Juss. Spreading or prostrate on the sea shore. 



scrophulariacej:. 



A. Leaves all or all but the lower ones alternate, rarely all radical. 



* Leaves gimple and entire {except in No. 1 and 16): coroUa aimietimes nearly regular, upper 



, lip not beak-like. 



Corolla 5-lobed, rotate: stamens 5; filaments woolly 1 



j: Corolla bilabiate, throat nearly closed: stamens 4. 



Base of corolla prolonged into a slender spur on lower side 2 



V Base of corolla swollen or saccate on lower side 3 



CoroUa large, open bilabiate with dentate lobes: stamens 2 4 



Corolla nearly regular: stamens 4: leaves narrow, mostly radical 14 



Corolla large, campanu late-bilabiate, 4-lobed: stamens 4 15 



Corolla and calyx 4-lobed: flowers small: stamens 2. 



Leaves cordate-orbicular, all radical, scapes slender 16 



Leaves on the stem: corolla rotate, 4-lobed 17 



* * Leaves or at least the bracts incisely lobed or pinnate: corolla tubular-bilabiate, cloaedi 



upper lip beah-like or compressed on the sides. 

 Leaves or lobes not serrate: anther cells unequal or only one. 



Upper corolla-lip much surpassing the 3-toothed obscure lower lip 18 



Upper lip erect, much smaller than the 3-saccate, 3-toothed lower lip 19 



Lips of club-shaped corolla nearly equal: calyx 1-3-leaved 20 



