188 MR. F. N. WILLIAMS ON THE GENUS SILENE. 
Species CANDOLLEANZ. 
(Otth, in DC. Prodr., vol. i. pp. 367-385.) 
In the first volume of the ‘Prodromus,’ Adolph Otth 
enumerates 217 species. It will be interesting to go through 
this list for the purpose of comparing the number of good 
species with the number enumerated in the present revision. 
Of the 217 there given, 103 are maintained and admitted 
under the same name in the foregoing enumeration as good 
species. Rather more than half, viz. 114, are to be accounted 
for by a process of elimination, which is carried out in the 
following paragraphs. 
Three species cannot be satisfactorily identified :—S. amena, 
Linn., S. distans, Otth, and 8. latifolia, Poir. The last has 
been referred to S. italica, Pers., but the meagre description 
does not warrant it: 28 are to be referred to other genera, 
viz., Melandryum (22), Heliosperma (3), and one each to 
Gypsophila, Petrocoptis, and Eudianthe. They are disposed of 
as follows :— 
S. Allamanni, laciniata, mexicana, Mociniana = Melandryum 
laciniatum, Rohrb. 
S. auriculata = Melandryum auriculatum, Rohrb. 
S. Baldwynii = Melandryum Baldwini, Rohrb. 
S. capensis, ornata, undulata = Melandryum ornatum, 
Aschers. 
S. Catesbei, virginica = Melandryum virginicum, A. Br. 
S. pennsylvanica, platypetala = Melandryum pennsylvani- 
cum, Rohrb. 
S. indica = Melandryum indicum, Walp. 
S. lanuginosa = Melandryum lanuginosum, Rohrb. 
S. lacera = Melandryum lacerum, mihi (near M. Eliza- 
bethe). 
S. noctiflora = Melandryum noctiflorum, Fries. 
S. regia = Melandryum illinoénse, Rohrb. 
S. Requient = Melandryum Requieni, Rohrb. 
S. rotundifolia = Melandryum rotundifolium, Hohrb. 
S. Siegert = Melandryum nivale, Nym. 
S. viscosa = Melandryum viscosum, Celak. 
