PLANTS OF ARKANSAS. 1 97 



Polyp ten's, Nutt. 



callosa (Nutt.), Gray ; Lesquereux. 



sphacelata (Nutt.), (P. hookeriana, Gray); Nuttall. 

 Dysodia, Cav. 



chrysanthemoides, Lag. 

 Rytnenatherum, Cass. 



tagetoides (T. & Gr.) Gray; Xuttall. 

 Helenium, L. 



autumnale, L. 



nudiJIorum,±\utt.; Lesquereux; Harvey (as Leptopoda 

 brachypoda.) 



quadridentatum, Labill; Nuttall. 



tenuifolium, Nutt. 

 Gaillardia, Foug. 



lanceolata, Michx.; Nuttall. 



pinnatifida, Torr.; Nuttall. 



pidchella, Foug.; Nuttall. 

 Achillea, L 



millefolitnn, L. 

 Anthemis, L. 



cotula, L. 

 Artemesia, L. 



lewisti, Torr. & Gr. Probably a fictitious species ac- 

 cording to Gray, Syn. Fl., 11,417, the Arkan- 

 sas specimen of Engelmann, probably A 

 canadensis, but immature. 



mexicana, Willd ; Gray. 

 Erechtites, Raf. 



hieracifolia (L.), Raf.; Lesquereux. 

 Senecio, L. 



aureus, L. 



var obovatus (Aluhl.) Torr. & Gr ; Harvey. 



lobatus, Pers.; d'Ailly. 



tomentosus, Michx.; Gray, d'Ailly. 



