whon tho frond is tlirowii into frcsh-watcr, Ccramidia rare, lateral on the 

 ramuli, scarcely sessile, ovate, with a narrow aperture. Tclraspores near the 

 ends of the ramuli. The colour is a deep blood-red, becoming brighter and 

 more rosy in drying ; or, if not suilicicntly washcil in fresh-water, darkening 

 and becoming more brown. The simtcmce is juicy, but crisp and lirm, and 

 very fragile ; in drying the plant firmly adheres to paper. 



In several respects this is allied to C. dasyphjlla, a species 

 common to Europe and Australia, but C. clavata is much more 

 robust, more densely branched, of brighter colour, and very fra- 

 gile ; the ramuli falling off very soon after the plant is plunged 

 in fresh-water. 



When I described it formerly, under another name, I was not 

 aware that it had been previously named and published by my 

 friend Sonder, from specimens collected by Dr. Mueller. 



Fig. 1; Chondria clavata, — the natural size. 2. Apex of a ramulus, with a 

 ceramidium. 3. Spores. 4. Kamuli, bearing tetraspores. 5. One of the 

 younger, fertile ramuli. 6. A tetraspore. 7. Cross-section of the frond : — 

 magnified. 



