instance, materials about which there could be no mistake; but
I have not been able to find, on the portion examined, the
axillary tetraspores which that observer describes. Such characters
as the barren filaments supply are faithfully given in the
annexed plate.
Fig. 1. Tufts of Ca l l ith am n io n spa r sum , growing on an old stem of Zarai-
naria:— natural size. 2. A few fronds from one of the tufts. 3. Portion
of a branch:— more or less magnfied.
Yir
w i
I
% *
il