_Nicotiana plumbaginifolia_, or lead-wort-leaved tobacco: radical leaves ovate, contracted at the base; stem-leaves lanceolate, clasping the stem; all undulated; corolla salver-shaped, acute. The native country of this species is unknown. It has been cultivated in some Italian gardens, and there were flowering specimens in May 1804, in the store of the late lady Amelia Hume. _Nicotiana axillaris_, or axillary tobacco: leaves opposite, ovate, flat, nearly sessile; stalk axillary, solitary single-flowered; corolla obtuse; segments of the calyx deep, spatulate. Gathered by Commerson at Monte Video, and communicated by Thouin to the younger Linnaeus. Leaves rather above an inch long, and near an inch wide, downy, and apparently viscid, like the rest of the herbage. Fruits unknown. _Nicotiana tristis_, or dull-purple tobacco: leaves lanceolate, wavy, clasping the stem; corolla salver-shaped, its tube not twice the length of the calyx, and scarcely longer than the obtuse limb. Gathered also by Commerson at Monte Video. _Nicotiana rustica_, common English tobacco: leaves petioled, ovate, quite entire; flowers obtuse. The stalks of this seldom rise more than three feet high. Leaves smooth, alternate, upon short foot-stalks. Flowers in small loose bunches on the top of the stalks, of an herbaceous yellow-colour, appearing in July, and succeeded by roundish capsules, ripening in the autumn. This is commonly called English tobacco, from its having been first introduced here, and being much more hardy than the other sorts, insomuch that it has become a weed in many places. _Nicotiana rugosa_ of Miller, rises with a strong stalk near four feet high; the leaves are shaped like those of the preceding, but are greatly furrowed on their surface, and near twice the size, of a darker green, and no longer on footstalks. _Nicotiana urens_, or stinging tobacco: leaves cordate, crenate; racemes recurved; stem hispid, stinging. Fructification in racemes directed one way and revolute, with bell-shaped corollas, and cordate leaves like those of Nicotiana rustica; but crenate, and the whole tree prickly. Native of South America. _Nicotiana glutinosa_, or clammy-leaved tobacco: leaves petioled, cordate quite entire; flowers in racemes, pointing one way, and ringent. Stalk round, near four feet high, sending out two or three branches from the lower parts. Leaves large, heart-shaped, and a little waved. _Nicotiana pusilla_, or primrose-leaved tobacco: leaves of oblong oval, radical; flowers in racemes, acute. This has a pretty thick taper root that strikes deep in the ground; at the top of it come out six or seven leaves spreading on the ground, about the size of those of the common primrose, but a deeper green. This kind was discovered by Dr. Houstoun at Vera Cruz, and he sent the seed to England.