THE GENERA OF MOSSES. 
6S 
worthy of notice, that, in A. torqmtum^ they are distichous, 
while in all the other species they are " spissa imbricata " 
The perichaetial leaves also vary, though not much, from 
each other. In A, ciliahim they are laciniated towards the 
apex, while the cauline ones are only denticulated. In 
A. torquatum they are erect, lanceolate, and imbricated, 
differing very widely from those of the stem. 
Obs. The Anidangia bear considerable affinity to a 
few Gymnostoma^ and in some instances come near to se- 
veral Grimmiae ; from all of which, however, a slight ex- 
amination shews them to be sufficiently distinct*. The 
genus, if the species be compared with each other, seems 
to divide naturally into two sections ; of which A. ciliatum, 
imherhe^ JUiforme^ repens^ and perhaps siibsessile, would 
form the first. 
The calyptras seem to vary exceedingly. In A, pulvlna- 
tum, Hedwig represents it almost dimidiate ; but Schkuhr, 
with more accuracy, makes it mi triform, with a few fissures 
at the base. Schw^grichen figures and describes that of 
A. suhsessile, " subcampanulata lateraliter secedens;" and 
Weber and Mohr agree by saying, " mitrseformis in plu- 
res lacinias fissa, fissura una praevalente." Again, in A, 
ceespititium, Schw^egrichen delineates it completely dimi- 
diate, but describes it " conica, basi bis aut pluries fissa 
and Weber and Mohr, to reconcile all parties, say, " di- 
midiato-mitrssformis/' B ridel notices the contradiction 
between Schw^grichen's figure and description ; " Ca- 
lyptram Schw^grichenii icon valde diversam ab ejus 
* With Grimmia, Anictangium has nevertheless heen confounded ; for, 
by an examination of Palissot de Beauvois' own specimens, we found his 
Hedwigia ( Anictangium ) nervosa to be nothing more than Grimmia apocar- 
pay var. /3, or Grimmia stricta of Turner, Muse. Hib. 
