liO NEW ARRANGEMENT OF 
employed, as they cannot assimilate under any other group. 
The persistent operculum brings them near to Andraa^ to 
which in habit they are most remote ; and so long as ge- 
neric characters are taken from the fruit, they must be ever 
kept separate from all peristomed mosses. 
Gen. III. Phascum, Lin7i. 
Fruct. Calyptra dimidiata, fugacissima, theca in non~ 
nullis paulo brevior, in plurimis minima, tenera, albescens, 
laxe reticulata. Seta terminalis, innovatione interdum quasi 
lateralis ; plerumque brevissima albo-virescens tenera ; ali- 
quando tamen, ut in P. bryoide^ duo ad sex lineas longa, 
brunnea rigidior. Thecae apophysis saspius nulla, sed in 
P. splachnoide^ monente Hornschuchio, prfesens. Theca 
a seta decidua, integra, Isevis, subglobosa vel ovata ; saepius 
et interdum eleganter reticulata; brunnea vel brunneo- 
fusca ; quandoque (ut in P. crassinervio et cuspidatd) tu- 
nica singulari cincta, tunica juniore " crassa, subcarnosa 
viridi-pallida pellucida,'"' maturiore et sicca calyptram mag- 
nam scariosam indehiscentem referente. Operculum obli- 
quum thec^ paulo tenerius, nunquam abscedens, sed ita 
thecam adnatum, separationisque linea tarn tenuis, ut oper- 
culum nullum, sed thecas acumen breve, tyro diceres. Pe- 
ristomium nullum. Columella dicta valde variabilis; in 
P. recto et curvicollo conspicua, prselonga; in plurimis 
brevior et fere nulla. Spondee majusculse tuberculosse 
angulatse; numero variantes, in P, alterni/blio sedecim 
tantumraodo, in P. serrato circiter centum. 
Char. DiFF. Theca a seta decidua ; calyptra brevis, 
jfugaa:. 
