THE DISINTEGRATION OF LYCHNIS. 167 
of these ramuli tertiary branches are formed, and s * The 
plants which I possess are as undou spose ‘aentical writh those 
described by Hooker and Harvey, as they are not with those of 
Montagne. On the other hand, the P. slendlestien figured by Kitzing 
is obviously that of Montagne. I cannot follow Hooker and 
at first, and afterwards every second ramulus, alternating on either 
side, develops secondary pinnules. In almost all the specimens 
this alternate compound branching i is quite regular; but in one or 
two, itedinididte stages occur where the ramuli are alternately 
smooth and wavy; and lastly, in others all are quite h 
Dumonr1a Fitiroris (Lyngb.) Grev., var.? Ihave experienced 
some difficulty in pei this plant. Prof. a to whom 
sent a specimen, gave it as his opinion that it was near Nemastoma. 
I confess I ae: not share that vi view. I — at ‘frst that it was not 
unlike ee en ee J. Ag., it di agree in 
a 
pean variety of that species. The plant has only tetraspores, 
that in absence of eystocarpic fruit I am compelled to record it 
with a query. 
Expianation or Prats 335.—Fig. 1. Ceteie articulata Harv., nat. oar 
2—4, Carpomitra Cabrere Kiitz., var. Halyseris Hook. et Harv 2, Apex of 
of origin of sporan gial layer x 20. 4. gee recone in long. vert, sect. 
x 20. 5. Rhodochorton Par keri, n. sp., nat. . Filaments of the same, 
with sporangia x 20. 7. Sporangia of the Miathe x 200. 8. Stichidium of 
Polyzonia cuneifolia var. bifida x 200. 9. Antheridium of same x 200 
THE DISINTEGRATION OF LYCHNIS. 
By Freperic N. Wituams, F.L.S. 
the delimitation of genera and on onieroa oa groups of 
wads , which have taken place from time to time in the order 
Cariiek yllace@, no penta has probably received eg rou ond handling 
and mutilation, more particularly at the hands of critical systematists 
in continental floras, as the genus Lychnis. Even in an attenuated 
German fi | 
rather than in ntroduce strange names into their lists of genera, 
~ have indefensibly caiiehed Silene at its expense. In discussing the 
