Nicotiana. SOL AN ACE. E. 545 



Herbs (or one or two soft-woody plants), nenrly all of American origin, heavy- 

 scented, viscid- pubescent, narcotic-poisonous, with mostly entire leaves and panicu- 

 late or racemose flowers, some of them rather showy. Our species all annuals. 



§ 1. Flowers pinTc-red {sometimes in cultivation white), open through the day: capsule 

 septicidal, dividing the two placentoi as well as the jMrtition. — Tabacum. 



1. N. Tabacum, Linn. (Common Tobacco.) Tall, large-leaved, with a panicle 

 of sliort-pedicelltMl llowers: corolla 2 inches long, funnelform with a wide or inflated 

 throat, and spreading acute or acuminate lobes. 



Var. undulata, 8endtner. Leaves very long and narrowly lanceolate, undulate 

 below the middle, gradually and much tapering to the slender apex : coroUa-lobes 

 also much acuminate. — N. caudata, IS^utt. PI. Gamb. 181? 



The common Tobacco, of Central or South AmiMican oiii^n'ii, is merely cultivated in California. 

 This may have been the case also with Nuttall's X. ciuhI.iIk, liom Monterey ; whieli appears to 

 be the same as the Yaqui Tobacco, found in a cultivated stulo in Arizona or Sonora, by I)i: 

 Palmer. It is probably the N. lancifolia, Willd., and A^. Ybarrensis, HBK. 



§ 2. Flowers white, greenish, or yelloivish : capsule septifragal, leaving the thin pa)-- 

 tition with the undivided placental column in the centre. 



* Corolla more or less constricted at the orifice, dull-colored, open through the dai/ ; 

 the lobes short and rounded. 



2. N. rustica, Linn. Eather stout, a foot or two high : leaves petioled, ovate, 

 or the lower sumowhat cordate, these oftener a foot long: panicle thyrsiform: calyx 

 broad, and with short and broad teeth, shorter than the globular at lirst only 

 2-valved capsule : corolla short and broad, less than an inch long, hardly thrice the 

 length of the calyx, oblong-inflated from the short narrow base ; the broad lobes 

 reticulate-veiny. 



Waste grounds, in California, as well as eastward and northward, probably escaped from 

 aboriginal cultivation : the native country uncertain. 



3. N. trigonophylla, Dunal. Eather slender, one to three feet high : leaves 

 sessile, oblong, 2 to d inches long, or the upper smaller; the lower obovate, with 

 narrow tapering auriculate and partly clasping, the upper with broader and more 

 clasping base : raceme at length loose and virgate, with bracts small or sometimes 

 wanting ; pedicels rather unilateral : calyx Avith subulate-lanceolate teeth, about 

 equalling the ovate 4-valved capsule : corolla greenish-white, less than an inch long, 

 narrowly tubular and gradually enlarging upwards, a little constricted at the oritice, 

 the very short limb obscurely Sdobed. — DC. Prodr. xiii. 5G2. iV. ipjomojmjlora, 

 Dunal, 1. c. 559 (Mo9ino & Sesse, Ic. Mex. Ined. t. 909) ; Cray, Proc. Am. Acad. 

 V. 166. N. midtijiora, Torr. in Pacif. Pt. Eep. v. 302. 



Southern part of the State ; "Monterey" {Coulter, but probably from farther south), and on 

 the Mohave and Colorado {Bigelow, Cooper) ; thence southward into Mexico and east to Texas. 

 Comparison of a tracing of Mocino and Sesse's figure leaves little doubt of the identity of Dunal's 

 two species : but the name here adopted was founded on specimens, the other upon a figure only. 



% * Corolla with open more or less dilated orifice to the long tube, tvhite, sometimes 

 with a greenish or bluish tinge, expanding at sitnset, closed by day except m very 

 cloudy iveather. 



4. N. attenuata, Torr. A foot or two high : leaves all petioled ; the radical 

 oval or oblong ; tho lower cauline ovatedanceolate or narrower ; the upper narrowly 

 lanceolate or linear and long-tapering to the point : flowers loosely panlcled, short - 

 pedicelled : upper bracts minute or none : calyx with triangidardanceolate teeth 

 much shorter than the tube and rather shorter than the 4-valved capsule : corolla 

 fully an inch long, narrow-salverform, with obtusely 5dobed border a third to 

 half an inch in diameter. — Watson, Bot, King Exp. 276, t. 27. 



