Carmichael’s original specimens, in the Hookerian Herbarium, I 
clearly made out the existence of a creeping rhizome from which 
the erect stems spring, and this species should therefore be re- 
moved to the section of C. Zurneri and C.pluma. It comes so 
close, indeed, to some states of C. Zurnerz, particularly to those 
varieties constituting C. repens of authors, that it may fairly be 
questioned whether C. mesocarpum should not be erased altoge- 
ther from the list of species, and referred as a synonym to 
C. Turneri. Capt. Carmichael’s specimen is mixed with fronds of 
C. pluma. ‘This is curious, as both were found growing on bare 
rocks, and C. p/uma is well known to prefer the stems of Lami- 
Nara. 
The figure here given has been prepared from authentic spe- 
cimens in Herb. Hook. The upper figure (fig. 1) is, of. course, 
imaginary ; the specimens examined being merely a few fronds, 
partly preserved on tale, and partly on paper. 
Fig. 1. Tuft of CALLITHAMNION MESOCARPUM :—the natural size. 2. Some of 
the fronds :—magnified. 3. Portion of a branch with tetraspores :—highly 
magnified. : 
