THE GENEKA OF MOSSES. 
tlore sequidistantes, in membranam cupulatam quasi, in- 
cur vi, uni- vel bi- vel quadri-geminantes transversim stria- 
ti ; horum geminati siccitate interdum sequidistantes, ple- 
rumque per paria quasi approximati. Columella exsicca- 
tion e plerumque exserta, stricta, rigida, apicem versus di- 
latata obtusa vel membrante opercularis rigiditate acuta. 
Sporulce grisese, minutae, globosse, pellucidae. 
Char. Diff. Seta terminalis. Theca apophysata, Pe- 
ristomium simplex e dentibus gemlnantibus siccitate arete 
reflexis. Columella apice dilatata. Calyptra Icevis, basi iit- 
tegra,Jugax. 
Fkuct. Calyptra at first mitriform, at length, from the 
enlargement of the capsule, bursting on one side, or dimi- 
diate, whitish or brownish, scariose, tender, even, glabrous^ 
very fugacious. Fruit-stalk terminal, smooth, mostly rigid 
and straight, sometimes flexible, succulent, pale ; in length 
varying extremely, but always longer than the perichaetium, 
generally solitary, being aggregated in one species only. 
Apophysis coloured, when mature either about equal to the 
capsule in diameter, or larger, obconical, cylindrical or 
globose, or even umbraculiform, glabrous, mostly even, 
very rarely rugose. Theca entire, subcylindrical, shorter 
than the apophysis, never striated, the mouth destitute of 
an elastic ring. Lid deciduous, nearly of the same colour 
as the theca, obtuse, either conical or hemispherical and 
umbonate. Peristome simple, composed of geminating teeth, 
closely reflexed when dry : the primary teeth (as far as our 
observations have enabled us to decide) are thirty-two in 
number, and, when in a moist state, equidistant, but so 
close as to form, as it were, a cupulate membrane over the 
mouth of the theca ; transversely striated, 1- or 2- or 4- 
geminating : the geminations sometimes equidistant when 
VOL* V. r f 
