64 THE MICROSCOPICAL NEWS. 
It may always be known by the concave leaves bearing on the 
upper side three or four membranous appendages attached to the 
nerve ; generally the leaves are obovate or elliptical, erecto-patent, 
and slightly imbricated ; capsule oval on a short pedicel, lid with 
an oblique beak shorter than the capsule. 
A very small species, fruiting both winter and spring, is & 
minitula, the dwarf Pottia. Rather rare are 2 Wéalsonz, the oval- 
fruited Pottia and P. crinzta, the bristly Pottia ; while very rare are 
P. viridifolia, P. littoralis, and P. asperula. P. Heimit, the lanced- 
leaved Pottia is very distinctly separated from the rest of the species 
by its polygamous inflorescence and by the spreading, oblong, 
lanceolate leaves, which are denticulate, or serrate at the apex; 
Fig. 23. 
nerve ceasing at or below the point; capsule obovate or oblong, 
not contracted at the mouth, the lid adhering to the columella 
some time after maturity. 
Growing on moist banks near the sea, it does not ripen its fruit 
until April or May. 
Agreeing in habit, mode of growth and fruiting, but differing 
from Pottia by the presence of a single peristome of sixteen teeth 
is the genus Anacalypta, represented by four species, the typical 
one of which may be said to be A J/anceolate, the lance-leaved 
Anacalypta. 
It is gathered on moist banks in calcareous soil, walls ; calcareous 
rocks, &c., and varies in size from one line to + in. long ; the leaves. 
