184 PROCEEDINGS OF THE AMERICAN ACADEMY 



IV. Of Willdenow, Species Plantarum, 1803. 



Volume III, part 3, containing the Compositor, is later than Mich- 

 aux's Flora, which in some places it refers to. 



The species in Willdenow's herbarium are numbered consecutively, 

 and under the several species the sheets are numbered. This vras 

 probably done after Willdenow's death. The folios bearing the higher 

 numbers are usually the older and the more authentic for the species. 

 Many of the earlier numbers are badly misnamed, and may be later 

 additions. The Muhlenbergian species here originate, and are repre- 

 sented in the herbarium by named and determinable specimens, which 

 is not the case in Muhlenberg's own herbarium at Philadelphia. The 

 latter proves to be of no account for this genus and Aster. 



S. Canadensis, L. Mostly true ; but fol. 1 is S. ccesia, and fol. 5 

 is S. odora. 



S. PROCERA, Ait. The plant of the Hortus Kewensis. 



S. SEROTiNA, Ait. The plant of Torr. and Gray's Flora, having 

 some pilosity on the ribs of the leaf beneath, the >S. giffcmtea, Ait. 



S. GIGANTEA, Ait. Fol. 3 is the authentic specimen, from Muhl- 

 enberg, glabrous, the true S. serotina of Alton ; fol. 1, 2, are unde- 

 veloped cultivated specimens of other species. 



S. ciLiARis, Muhl. in litt. Is S.juncea, Ait. 



S- REFLEXA. Fol. 2 is the authentic plant, and apparently of 

 Alton, viz. a form of S. Canadensis ; fol. 1 may be a form of S. 

 ruffosa, Mill. 



S. LATERIFLORA. Not the Linnaean plant, but the plant early cul- 

 tivated under this name, viz. *S'. eUiptica, var. axillijiora. 



S. ASPERA, Ait. The plant of Alton, viz. a form of *S'. rugosa, 

 Mill. 



S. ALTissiMA, L. Fol. 1 is a form of ^S*. Canadensis; fol. 2, 

 vrhich accords with Willdenow's character, is S. rugosa, Mill., with 

 narrow leaves. 



S. RUGOSA, Mill. From Muhlenberg; with broadly oblong and 

 not rugose but unusually scabrous leaves. 



S. SCABRA, Muhl. in litt. Same as the preceding, with smaller 

 and more sen-ate leaves, rugose-veiny and scabrous beneath, glabrous 

 and nearly smooth above. But Muhlenberg in his manuscript Florula 

 Lancastriensis evidently describes not this, but S. procera, Ait. 



S. NEMORALis, Ait. Only a radical leaf represents the species; 

 the flowering specimen and two large radical leaves are of S. patula^ 



