; 'ft I : ;
their breadth, and of the ramuli graduaUy shorter; dissepiments dark-
coloured, cylindrical, or slightly swollen. Tetraspores several in each joint,
whorled, large, and very prominent. Favellæ (?) imperfectly organized,
very irregular in form, issuing in dense clusters from the sides of the
branches, heaped together, destitute of involucre, containing a fine dark-
coloured powder, but no regularly foimed spores. These favellæ (?) are
produced by the same individuals that contain tetraspores. Substance rigid,
not closely adhering to paper, unless after long steeping in fresh water.
Colour, a dark brownish purple or blackish red.
A more sleoder plant than C. diaphanum, of a darker colour,
and with shorter joints, and further distinguished from that
species by tbe straight tips of the branches, more prominent
tetraspores, and above all, by the clustered favellæ, bursting in
irregular masses from various parts of the stem and branches.
I confess that I cannot regard these clusters as a normal fructification,
nor am I confident that they are even imperfectly formed
favellæ, but rather consider them as erumpent masses of cells, of
an anomalous character. From true favellæ they differ in being
destitute of involucral ramuli, and also in their structure, the
contents being a fine powder compacted together, without trace
of spores, such as are usually found in these organs.
A distorted variety (fig. 2) frequently occurs among normal
specimens, and this is very generally furnished with the anomalous
fruit. Some specimens are excessively squarrose, with the
stem and branches regularly bent at short distances, and every
ramulus divaricating.
Our figure has been printed in too red an ink.
Fig. 1. Tuft of Cbkamidm D e slo n g ch amp ii. 2. A distorted frond :—both of
the natural size. 3. Portion of the main stem. 4. Apex of a branch, with
imbedded tetraspores. 5. Fertile joints from the same, with tetraspores in
situ. 6. Apex of a branch, with erumpent/«»eS® (?). 7. Joints from the
same, yiiÜi favelloe (?) and tetraspores :— all more or k