between the stratification of the perpendicular rocks. Its
colour is a brownish green. Stems scarcely more than half
an inch long. Leaves decidedly nerved, even those of the
perichaetium, which are the largest of all and the most
broad and pellucid at the base. The nerve is narrow below,
gradually broader upwards till it occupies the whole diameter
of the leaf at the narrowed apex. Capsule turbinate,
on a short fruitstalk. Lid obliquely rostrate. Calyptra
certainly dimidiate; whence it has been incorrectly removed
from Gymnostomum by some authors.
The specimen was obligingly sent by Mr. Wilson.
W. J . H.
