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There are varieties with bright purple riowers, and \Mih 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 ditiused, alternate, the lower ones sometimes 

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

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

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

 especiallv in front, or with a tooth or two on each side: the flowere 

 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, <S:c. 



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

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

 stem advances: stem-leaves linear, (piite entire, sessile, few, gra- 

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

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

 colour, in corymbs, the outer ones ped uncled, with the two other 

 petals lariier. It is a native of Spain, iScc. and is annual, dowering in 



July. 



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

 flowers arc much smaller, but have an agreeable odour. 'I'hey 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 jielioled, thtise on the stem smooth and 

 entire : the flowers are rcrldish 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, w Inch seldom rises above 

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

 every side, and fall towards the ground if they arc 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 



2 n 



