APPENDIX. 395 



I think there can be no doubt, that this is a new and 

 distinct species of Vernonia, although the description from 

 a single specimen may be imperfect. 



Stem apparently about one foot high, erect, grooved, 

 somewhat scabrous, and densely covered by proportion- 

 ally large, suberect leaves. These are sessile, subclasping, 

 lanceolate, acuminate, about one inch and a half long, en- 

 tire towards the point, sharply serrate below, and about 

 half an inch broad. Upper sui-face roughly scabrous, the 

 lower remarkably punctate by numerous small, impressed 

 pores, otherwise smooth. Corymb terminal, fastigiate, 

 pedicells pulverulently subvillous. Calyx ovate, imbri- 

 cate. Scales ovate, obtuse, very large, and finely ciliate 

 all round their margin. 



Flowers red, of considerable size. 



84. Artemisia sericea, Nutt. Gen. II. p. 143. 

 Peculiar to the north-west ; labelled by Mr. Nuttall. 

 Mab. Prairies of St. Peter's and Red rivers. 



85. Gnaphalium margaritaceum,, Pursh, p. 524. 

 Common in Pennsylvania. 



Hab. Rainy Lake. 



S6. Erigeron canadense. 



p. * grandijlorum. 



This may be a new species ; as, however, the leaves and. 

 stem resemble the canadense perfectly, and there is but 

 one specimen, I prefer arranging it as a variety. The 

 flowers are more than twice the size of those of E. cana- 

 dense, (with some appearance that the rays were yellow, 

 on short peduncles and pedicells, by no means branching 

 out, ci'owded together in the summit and axills of the 

 leaves. 



87. Inula scabra? Nutt. Gen. II. p. 151 and 152. 



I am not perfectly satisfied that this is the species de- 



