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There are varieties with bright purple flowers, and with white 

 flowers. 



The second species resembles the first very much, but is smaller: 

 the stem is seven or eight inches high, pubescent, somewhat rugged, 

 branched : branches diffused, alternate, the lower ones sometimes 

 opposite, not rising all to the same height: the leaves are alternate, 

 oblanceolate, or linear-lanceolale, blunt, sessile, decurrent, bright 

 green, thickish, smooth, the lower ones serrate, the rest toothletted, 

 especially in front, or with a tooth or two on each side : the flowers 

 white, in a terminating spike-like raceme: or rather, in a corymb 

 lengthened into a raceme as the inflorescence advances. It is a na- 

 tive of Switzerland, &c. 



The third has a simple, white, twisted root, having few fibres : 

 the root-leaves lanceolate-linear, serrate, withering and falling as the 

 stem advances: stem-leaves linear, quite entire,, sessile, few, gra- 

 dually shorter, sharpish : the stem herbaceous, straight, slender, 

 branched at top : branches mostly bifid : the flowers of a purple 

 colour, in corymbs, the outer ones peduncled, with the two other 

 petals larger. It is a native of Spain, &c. and is annual, flowering in 

 July. 



The fourth species seldom grows so large as the first, and the 

 flowers are much smaller, but have an agreeable odour. They are in 

 close corymbs, and are of a snowy whiteness. It is a native of Geneva. 



The fifth has a creeping stem: the leaves are smooth, soft; those 

 next the root quite entire and petioled, those on the stem smooth and 

 entire : the flowers are reddish purple, almost regular, in racemes, 

 on spreading peduncles. It is a native of Switzerland, flowering 

 from May to July. 



The sixth species is a low shrubby plant, which seldom rises above 

 a foot and half high, having many slender branches, which spread on 

 every side, and fall towards the ground if they are not supported. 

 These branches are well furnished towards their extremity with 

 leaves, which continue green all the year; and in summer the flow- 

 ers are produced at the end of the shoots, are white, and grow in an 

 umbel, continue long in beauty, and, being succeeded by others, the 



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