66 MopERN TREATMENT OF ASTER 
a, all-cordate form. 
P, sessile leaf form. 
7, Cove Valley form, from Penn. 
Eurybia commixta = A. commixtus (Nees) Kuntze. 
Eurybia corymbosa = A. divaricatus L. 
De CaANDOLLE, Prodromus, 5: 264-265. 1836. 
Biotia Schreberi = A. Schreberi a Nees. 
Biotia latifolia = A. macrophyilus funguifolius Bu. 
Biotia glomerata = A. glomeratus Bernhardi in Nees. 
Liotta macrophylla = A. macrophyllus L. 
Biotia macrophylla divaricata* = A. divaricatus L. 
Biotia commixta = A. commiatus (Nees) Kuntze. 
Biotia corymbosa = A. divaricatus L. 
Biotia corymbosa alata = A. divaricatus alatus (Barton) Bu. 
Since De Candolle s Frodromus, Biotia has not been recognized as a 
genus, the foregoing plants being relegated to Aster ; but three 
other species have at various times been temporarily enrolled 
as species of Biotia, as follows : 
Biotia crenata Steudel, Nom. ed. 2. 154. 1841 = Matiria 3 
crenata. This was the Aster crenatus of Lessing, Syn. d 
Comp. 166. 1832. : 
Biotia discolor Maximovicz, Primitize Fl. Amurensis, 146. 
1859 — Aster scaber, Thunberg (Fl. Japon. 316. 1784) — 
Doellingeria scabra Nees, 1832. Some would still sepa- 
rate B. discolor of the Amoor from typical D. scabra of 
Japan. The representatives of Maximovicz's Btiotia dis- 
color in American herbaria are certainly very different from 
American Biotian Asters, and this plant does not appear to 
belong within Aster as now understood. 4 
Biotia? Japonica Miquel, Prolusiones Florae Japonicae, 102. 
1866-7. Notthe same with Aster Japonicus Lessing ex : 
Nees, Gen. Ast. 33, 34. 1832; which is Jaula dubia 
Thunb. Fl. Jap. 318. Miquel was very doubtful when 
writing his description in the Pro/uszoues as to the proper 
* A variety founded by De Candolle upon a misconception regarding such speci- 
mens of 4. divaricatus L. as have a leafy inflorescence. Such were classed correctly 
by Linnaeus under 4. divaricatus, but by Nees were assigned to A. macroph //us L., 
which led De Candolle to constitute them a variety of the latter species. 
