on the under. Scape without bractes, upright,, one-flowered, 

 cottony, twice or three times longer than the leaves. Calyx 

 cylindrical : leaflets linear, lower ones shortest. Flowers 

 white, nodding. Raj/ many -flowered, quite entire, female : 

 within the ray is a row of female florets with an imperfect 

 petal, shorter than the style, and within that another row, 

 likewise female, without any corolla : stigma bifid revolute. 

 Male florets confined to the centre of the disk, bilabiate : 

 upper Up, in our specimen, apparently quite entire, lower 

 lip generally two-cleft, both revolute. 



Our plant having been brought from Paris by Mr. Wal- 

 ker, there can be little doubt but that it is the same with 

 Ventenat's ; but his figure represents the leaves as quite 

 entire and the flower nearly upright. Pursh and Michaux 

 also both describe the leaves as quite entire. But the de- 

 scription by Nuttall, who had no doubt seen the living 

 plant, agrees well with our own observation. The denticu- 

 lation being in all cases small, and in some perhaps nearly 

 obsolete, might escape notice in dried specimens, and 

 indeed, as the leaf shrinks in drying, are nearly concealed 

 by the thick tomentum, which extends quite to the edge. 



Chaptalia, a genus established by Ventenat and named 

 in honour of M. Chaptal, will comprehend likewise Tussi- 

 lago nutans, albicans, dentata, and perhaps some other 

 species, together with part of the genus Perdicium. We 

 doubt indeed whether Tussilago dentata of Linn^us taken 

 up from Plumier (Icon. 40. f. 2.) be not the same species 

 with our plant. 



A hardy perennial. Native of North America. Com- 

 municated by John Walker, Esq. 



