Nlcotiana. SOLAXACE.E. 545 



Herbs (or one or two soft-woody plants), nearly 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 pink-red (sometimes in cultivation white), open through tlie day: capsule 

 septicidal, dividing tile two placenta' as well as the partition. — Tabacuji. 



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

 of short-pedicelled flowers: corolla 2 inches long, funnelform with a wide or inflated 

 throat, and spreading acute or acuminate lobes. 



Var. undulata, .Sendtner. Leaves very long and narrowly lanceolate, undulate 

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

 also much acuminate. — A 7 , caudata, Nutt. PI. Gamb. 181] 



The common Tobacco, of Central or South American origin, is merely cultivated in California. 

 This may have been the case also with Xuttall's X. ca.iulnla, from Monterey ; which appears to 

 be the same as the Yaqui- Tobacco, found in a cultivated state in Arizona or Sonora, by Dr. 

 Palmer. It is probably the X. laiici/olia, "Willd., and X. Ybarrcnsis, HBK. 



§ 2. Flowers white, greenish, or yellowish : capsule septifragal, leaving the thin par- 

 tition with tlie undivided placental column in the centre. 



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



the lobes short and rounded. 



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

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

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

 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 j the native country uncertain. 



3. N. trigonophylla, DunaL Lather slender, one to three feet high: leaves 

 sessile, iililmig, 2 to 4 inches long, or the upper smaller; the lower obnvate, witli 

 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 

 wauling; pedicels rather unilateral: calyx with subulate-lanceolate teeth, about 

 equalling the ovate t-valved capsule : c >rolla greenish-white, less than an inch long, 

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

 the very short limb obscurely 5-lobed. — DC Prodr. xiii. 562. X. ipomopsiflora, 

 Dunal, 1. c. 559 (Mocino >v Sesse, [c. Mex. Ined. t. 909); Gray, Proc. Am. Acad, 

 v. 166. X. multifiora, Tore, in Paci£ R. Hep. v. .'302. 



Southern pari of the State; " Monterey " (Coulter, but probably from farther south'), and on 

 tie Mohave and Colorado (Bigelow, Cooper); thi ithward into Mexico and easl to Texas. 



( lomparison 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. 



:•. 1',.,-nli.t with ■•j", i more or lest dilated orifice to the long tube, white, sometimes 

 with a greenish or bluish tinge, expanding at sunset, closed by day except in very 

 cloudy "■- athi r. 



I. IT. attenuate, Torr. A foot oi two high: leaves all petioled; the radical 

 oval oi oblon ■ : the lower can line ovate-lanceolate or narrower ; the upper narrowly 

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

 pedicelled : upper bracts minute or none: calyx with triangular-lanceolate I 

 much shorter than the lube and rather shorter than the I valved capsule : corolla 

 fully an inch long, narrow-snlverform, with obtusely 5-lobed border a thud to 

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



