92 REVUE BRYOLOGIQUE. 
it ends in a tubular mouth. By the protrusion of the capsule 
itis ruptured, as in Jungermania, and the laciniæ are of course 
hidden within the involucre, but are in no respect different 
from the apical laciniæ of the emersed perianth of Junger 
mania. 
These {wo groups, although hitherto incompletely defined, 
are in reality very distinct. Lindberg, Carrington and others, 
have recombined them into a single genus, under Gray's 
name, Nardia , but I have never been reconciled to this mea- 
sure, and would still keep them apart, limiting Gray’s name, 
Nardia, to his first two species (= Mesophylla Dum. olim — 
_ Alicularia Corda ex p. ); and retaining for his third species 
Dumortiers’s name, Marsupella, as more ancient than $arco- 
In Nardia : 
_ 4. Caulis (cum foliis) a latere 
_ compressus, basi pro more nec 
_ rhizomatosus nec flagellifer. 
2. Stipulæ (s. folia postica, s, 
_ hypophylla) præsentes, 
8. Folia distincte succuba, in- 
= tula a latere compressa evadit ), 
4. Folia æqualiter concavula, 
vel subplana —neque complicata 
nec carinata — apice rotundata, 
rarius retusa, rarissime biden- 
“tai: 52 
..b. Involucra e bracteis 2-4 
ugis, verticillatis, uträque basi 
: LATTES bractea postica s. brac- 
_ teola ) 
adnatis. 
7 6. Perianthia a latere sub- 
_ compressa, é 
connatis perianthioque 
= terdüm accumbentia (unde plan- 
scyphus. Their chief diagnostics are as follows : 
In Marsupella : 
1. Caulis (cum foliis) a fronte 
compressus, basi rhizomatosus 
flagellaque subaphylla persæpe 
demittens. 
2. Stipulæ caulinæ nullæ. 
3. Folia transversa.—In caule 
inordinatim elongato rard vidi- 
mus folia inferiora parum suc- 
cuba. 
4. Folia canaliculato-concava, 
vel in plurimis subcomplicata 
carinataque (exinde plantula a 
fronte compressa videtur), sem- 
per biloba. - 
5. Bracteæ pauci-plurijugæ, 
intimæ (1-2 jugæ) inter se et 
cum perianthio basi connaltæ, 
bracteolis normaliter nullis. 
6. Perianthia a fronte com- 
pressula; in subgenere Acolea 
ex p. deficientia. ; 
