172 PROCEEDINGS OF THE AMERICAN ACADEMY 



A. coRiDiFOLics. A marked variety of A. dumosus, L., of the 

 piue-baneu district of the Soutiiern Atlantic States. 



A. SPARSiFLORUS. A slender form of A. dumosus, L. 



A. suRCULOSus. The recognized species, from North Carolina. 



A. DivERSiFOLius. Same as A. undulauts of Linnaeus and of 

 most authors. 



A. viLLOSUS. fA. ericoides, var. villosus, Torr. and Gray. 



A. AMPLEXICAUHS. A. pateus, Ait. ; and there is an earlier A. 

 amplexicaulis, Lam. 



A. BiFLORUS. A small northern variety of A. radula, Ait. 



Nearly all the Michauxian species had already been well deter- 

 mined. 



VI. Species originating in Hoffmann, Pliytographische Blatter, 1803. 



A. CTANEUS. Clearly A. Icevis, L. 



A. THYRSIFLORUS. The figure and detailed description point to 

 the A. Novi-Belgii. The plant in cultivation under the name twenty 

 to forty years ago, and preserved in herbaria, has smaller and nar- 

 rower leaves. 



VII. Species originating in Willdenow, Species Plantarum, iii. part 3, pub- 

 lished in 1803. [Later than Michaux, whose species are mentioned, and 

 farther on in the book the Flora is cited by volume and page.] 



A. piLOSUS. The A. villosus of Michaux, whose name is given as 

 a synonym, and whose specimen was described. 



A. ciLiATUS, Muhl. in litt. Is A. middjlorus, Ait. 



A. SPURius. A. NovcE-AnglicE, a cultivated form, 



A. PiiLOGiFOLius, Muhl. The recognized jilant, from Muhlen- 

 berg, A. patens, var. phlogifoUus. 



A. SAGiTTiFOLius, " Wedermeyer." The specimens on fol. 1, 2, 3, 

 represent the species in the herbarium ; that of Torrey and Gray's 

 Flora. 



A. HUMiLis. The indigenous specimen from Muhlenberg is a low 

 and broad-leaved form of A. umbellatus, Ait., i. e. the Diplopappus 

 amygdalinus of Torr. and Gray's Flora. The cultivated specimen, 

 answering to the figure in Hort. Berol. t. G7, is A. infnnus, Michx. 

 The character appears to have been drawn from the former. 



A. CORNIFOLIUS, Muhl. Same as the A. injirmus, Michx., and as 

 the A. humills figured in the Hortus Beroliueusis. 



