448 
NEW ARRANGEMENT OF 
and this in several species of Splachnum ; the longitudinal 
lines, however, invariably denoting the total number of teeth 
to be thirty-two. 
The Splachnoidea differ from the 0?'thotricJioidea by the 
capitate columella, by their scariose and fugacious calyptra, 
which is moreover without furrows, and closely adapted 
to the theca, until it splits longitudinally, and falls off ; the 
base also is not lacerated. In the Orthotrichoidede, the 
calyptra is permanently mitriform, loose about the theca, 
generally furrowed, and pilose ; or, if glabrous, it is either 
laciniated at the base, or with four or five large triangular 
appendages. 
Gen. XI. Splachnum, Montin. Linn. Hedw. 
Fruct. Calyptra primo mitriformis postea succrescenda 
theca latere rumpens seu dimidiata, albida vel fuscescens, 
scariosa, tenera^ l^vis, glabra, valde fugax. Seta termina- 
lis, l^vis, plerumque rigida et stricta, quandoque autem 
tenera, succulenta, pallida; longitudine valde varians sed 
perichaetio semper longior, saepius solitaria, in una specie 
aggregata. Apophysis matura colorata, vel theca subsequa- 
lis vel amplior ; obconica cylindrica aut globosa, aut etiam 
umbraculiformis ; plerumque Isevis quandoque rugosa, 
glabra. Theca integra, subcylindrica, apophysi brevior, 
semper estriata, ore absque annulo elastico. Opeixulum 
deciduum, thecse subconcolor, obtusum, vel conicum vel 
h em isph aerie um umbonatumque. Peristomimn simplex e 
dentibus geminantibus siccitate arete reflexis constans : 
dentes primarii (quousque nobis observare licet) 32, ma- 
