270 SOLANACE^. (NIGHTSHADE FAMILY.) 



■*- •*- Strong-scented, villous or pubescent with viscid or glandidar simple hairs : 

 fruiting cali/x ovate-pijramidal and carinatel;] 6-nngled at maturiti/, loosely 

 enveloping the green or at length yelloiv berry ; leaves ovate or cordate. 



3. P. pubeseens, 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 icith 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. Virginiana, 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 m diameter, dull 

 sulphur- yellow loith a brownish centre: anthers yellow: pedicels ^ tol inch long. — 

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

 1- H- 1- Perennials, not viscid, the pubescence more or less stellular, mostly low: 



anthers almost always yellow. 



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

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

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

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

 base, and from repand-uudulate to coarsely sinuate-toothed : corolla ^ inch in 

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



6. P. lanceoiata, Michx. More or less hirsute- pubescent ivith short and stijff 

 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, van/hig 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, § to f inch in diame- 

 ter. — P. Pennsylvamca, 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. NICOTIANAji Tourn. Tobacco. 



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

 leaves, and paniculate or racemose flowers. 



1 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 laciuiately angled and toothed leaves, a 

 white corolla about 3 inches long, and an erect capsule thicldy 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 prictles are pubescent 



