270 SOLAXACE.E. (NIGHTSHADE FAMILY.) 



+- •*- Strong-scented, villous or pubescent icith viscid or glandidar simple hairs: 

 fruiting calyx ovate-pyramided and carinately b-angled at maturity, loosely 

 enveloping the green or at length yellow berry : leaves ovate or cordate. 



3. P. pubescens, L. Annual, a foot or two high, with at length widely 

 spreading branches : leaves varying from nearly entire to coarsely and obtusely 

 repand-toothed, sometimes becoming nearly glabrous except on the midrib 

 and veins : corolla about ■} inch in diameter when expanded, dull yellow with a 

 purplish brown eye: anthers violet: pedicels 3 to 5 lines long: fruiting calyx 

 mostly pubescent and viscid. — From California to Colorado and Texas, thence 

 eastward to New York and Florida. 



4. P. Virginiaiia, Mill. Perennial, a foot or so high, from slender and 

 deep creeping subterranean shoots, at length spreading or decumbent, pubescent 

 or hirsute-villous with many-jointed hairs: leaves either repandly or saliently 

 few-toothed or some nearly entire : corolla from f to 1 inch in diameter, dull 

 sulphur-yellow with a brownish centre: anthers yellow: pedicels ± to 1 inch long. — 

 P. viscosa of Gray's Manual. From Colorado eastward across the continent. 

 •*-•*-*- Perennials, not viscid, the pubescence more or less stellular, mostly low: 



anthers almost o'ways yellow. 



5. P. Fendleri, Gray. Pruinose-puberulent ; the pubescence microscopically 

 minute and partly simple, partly branched or stellular, sometimes a little glandu- 

 lar : steins a span to a foot high from a deep tuberous stock, much branched : 

 leaves small, from deltoid-ovate or slightly cordate to ovate-lanceohite, with abrupt 

 base, and from repand-undulate to coarsely sinuate-toothed : corolla | inch in 

 diameter. — Proc. Am. Acad. x. 65. S. Colorado and New Mexico. 



6. P. laneeolata, Michx. More or less hirsute- pubescent with shoi-t and stiff 

 tapering hairs, most of which are simple, a few 2 to 3-forked, varying to nearly 

 glabrous : stems a span to a foot high, angled, somewhat rigid : leaves pale 

 green, varying from obiong-ovate to narrowly lanceolate, acute at base or tapering 

 into a short petiole, and from sparingly angulate-few-toothed to undulate or 

 entire: corolla ochroieucous with more or less dark eye, f to f inch in diame- 

 ter — P. Pennsyivanica, Gray Man., in part. On the plains from New Mexico, 

 Colorado, and Utah, eastward to Florida and Lake Winnipeg. 



Var. laevigata, Gray. Glabrous or almost so throughout, or with some 

 extremely short and pointed appressed rigid hairs on young parts, calyx, etc., 

 or on the margin of the leaves. — From Nebraska to Texas and westward to 

 New Mexico and Arizona. 



4. NICOTIAN A, 1 Tourn. Tobacco. 



Heavy-scented and usually viscid-pubescent herbs; with mostly entire 

 leaves, and paniculate or racemose flowers. 



i The two introduced species of Datura may be distinguished as follows ; — 

 D. Stramonium, L , the common Jamestown (vulgarized to "Jimson") "Weed, is green 

 and glabrous, 1 to 4 feet high ; has sinuately and laciniately angled and toothed leaves, a 

 white corolla about 3 inches long, and an erect capsule thickly armed with short stout 

 prickles. 



D. discolor, Bernh., probably from Mexico, is low and more or less cinereous-pubescent: 

 has leaves like the last, but the white corolla is tinged with purple and perhaps smaller, and 

 the nodding globose capsule and its stout large prickles are pubescent 



