SOLANACEAE . 1111 
17. P. sinuata Rydb. Stem decumbent, villous with long flat hairs and den 
viscid: leaf- cds rounded ovate, very obli ique at the base and often subcordate 
pubescent with long flat hairs especially on n the veins, ap aie, undulate-sinu ate: 
calyx densely koran with flat hairs and viscid; lobes ra en Ps -lanceolate, 
about equalling the tube: corolla ee with darker spots: fruiting calyx and 
berry unknown. and: (?), Fla. 
18. P. ambigua (A. Gray) Britton. Stem 3-8 dm. tall, light green, villous 
wit g flat s: leaves with the finer pubescence sparse; blades over 5 
long, thin, light-green, 2s scarcely at all viscid, ovate or cordate, somewhat 
sinuately d or ne entire, acute, but l minate: calyx villous; 
i oothe | 
lobes triangular, gen nu shorter than the tube: corolla 1.5-2 em. broad, yellow 
with ae E ; wed generally purple: fruiting calyx ovoid, somewhat 
sunken se.—Rich soil, especially in thickets, various provinces N of 
Coastal "Plain Tenn. to ls. ES and Va. 
E a Niue ago Dunal. Stem puberulent and villous with long flat hairs 
hat viscid, generally zigzag: ie Sa Ms Lips ovate, often 
obligue, but LAM rarely cordate at the bas r less acu mu , mostly 
entire, or occasionally sinuately dentate and Pc thick, preise hairy, not 
at all pube PIRE the long hair rs often confined to the veins of the lower sur- 
face: ealyx villous; lobes triangular, shorter Ue the tube: corolla 1-1.5 em. 
broad, yellow with darker d anthers yellow: fruiting calyx ovoid, 5-angled 
d sunken at the base.—Dry soil, often in pinelands, various provinces, Ga. to 
La., Ia., and R. I 
20. P. heterophylla Nees. Stem erect, or later generally decumbent and 
spreading, viscid and glandular, villous with moderately long, jointed flat hairs: 
leaf-blades generally over 5 cm. long, gen erally broadly eordat e, pid acute 
u y rarely with a t 
S 
e long-villous; lobes triangular, generally shorter than the tube: d 
—1.5 em. broad, yellowish: anthers yellow: fruiting calyx 2.5-5 em. long, ovoid 
to conic- "pend jon hut sunken at the base.—Woods, sandy ui and alluvial 
banks, various provinces, Fla. to Tex., Sask., and N. B.—Plan 5 with leaves up 
to 10 em. in diameter sometimes occur on the Florida m 
21. P. mollis Nutt. Stem 3- 6 em. ugh densely whitish- or grayish-tomen- 
tose with stellate aba leaf-blades rounded cordate or the upper broadly 
ovate, coarsely sinuately toothed: calyx Te ely stellate; pu zu gen- 
erally a little shorter than the tube: eorolla 1.5-2 n dia , bright- 
yellow and with a purplish center, more or less stellate. ‘pubescent M Bon: 
anthers Pat or tinged with purple: b cR 3-5 em. long, ovoid, acumi- 
nate, slightly 5 -angled a nd a little sunken at the base. ~ thickets, oo Da 
and pinelands, various provinees, Fla. to Tex., Calif., and EM i 
22. P. viscosa L. Stem slender, creeping, einereous with a dense stellate 
rds cence or in age rarely glabra ate : leaf-blades elliptie, oval, or ovate, obtuse, 
thinnish, entire or undulate calyx. stellate-pubescent; lobes triangular, gen- 
erally shorter than the tube: Nos E x with a darker center, 
1.5-2 em. broad: fruiting calyx 2-2.8 em. long, rounded-ovoid, scarcely sunken 
at the base.—Coastal sand-dunes, eae woods near the coast, pinelands and 
prairies, Fla. to Tex. and Va.—(W. I., Mez., C. A., S. A.) 
23, P. fuscomaculata De Rouv. Stem decumbent or ascending, terete, with 
decurrent ridges, a little pruinose. ud leaf-blades 2—4 cm. long, ovate, some 
what oblique at the base, entir repand, the upper often opposite: calyx 
pruinose, a little stellate iud stellate. ciliate; lobes triangular, shorter than the 
