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where they are broadest, diminishing gradually to a sharp point; 

 they have small serratures on their edges, which scarcely appear. The 

 flowers grow in a close spike at the end of the stalks; are white, and 

 almost like those of the Foxglove. It is a native of North America. 



According to some, it varies with white flowers, with rose-coloured 

 flowers, with red flowers, and with purple flowers. 



In the second species, the roots do not creep so far as those of 

 the first: the stalks are stronger, the leaves much broader, and 

 oblique; they are deeply sawed on their edges, and stand upon short 

 foot-stalks; the corolla is of a bright purple colour, and consequently 

 makes a finer appearance than the above sort. It is a native of Vir- 

 ginia. 



The third species resembles the first; but the stalks and leaves 

 are very hairy, and the flower is of a purer white. It is a native of 

 New England. 



Some assert this to vary with white flowers, with blue flowers, 

 with red flowers, and with purple flowers. 



The fourth has a cylindric, pubescent, upright stem, a foot and 

 half high, putting out several side branches: the leaves are oblong- 

 lanceolate, ending in a point: the flowers in short loose spikes from 

 the divisions of the stalks, and of a purple colour. It is a native of 

 North America. 



They all flower in the autumn, from September to November. 



Culture. The mode of propagation in the three first species is 

 by the roots, which multiply easily, being parted in autumn, or early 

 in spring, and planted where they are to remain: but the fourth sort 

 must be raised annually from seed, by sowing it in autumn as soon 

 as perfectly ripened. 



The plants rise the following spring, and may be planted out in 

 the borders during the summer months. They are hardy plants, and 

 succeed in most soils and situations. 



All these plants have a very ornamental effect for some time in 

 autumn, after the principal bloom of most others is over; and, from 

 being of different colours, produce much variety when planted in 

 the borders of pleasure-grounds. 



