(38) 



a bright transparent brownish red, not changing in diying, passing into 

 pale yellow white in decay. Tubercles (nemathecia) spherical, sessile on 

 the apices of the leaflets, composed of radiating moniliform filaments, 

 " the ai-ticulations of which are at length converted into tetraspores." 

 No other fruit, we believe, has been observed. 



There is a very close resemblance between this species and P. riibens, 

 both in form and colour, but the proliferous shoots of the present 

 species arise from the apices of the leaflets or rarely from their margins, 

 whereas in P. ruhens they arise invariably from their discs. The situa- 

 tions of the tubercles also, which are generally produced abundantly in 

 the present species, will afford an additional character. In P. Brodicei the 

 stems are more distinctly cylindi-ical, and the fronds somewhat less 

 divided, and in almost all our specimens the apices are more or less 

 fimbriated or laciniated. As in P. ruhens also, the stems often produce 

 long, linear, strap-shaped elongations. 



The tubercles or nemathecia are generally in abundance, but we have 

 never been able to find perfect tetraspores or spores. In all the speci- 

 mens we have dissected, the cells of the tubercle were filled with 

 granu^lar endochrome. In the centre these were large, pale, and lax ; 

 the remainder, forming the greater portion of the tubercle, were 

 moniliform, small, densely packed, and filled with a deep, dark piu-ple 

 endochrome. 



It was originally discovered by Mr. Brodie, of Brodie, at Lossiemouth, 

 and to him the species has been dedicated by Agardh. 



EXPLANATION OP PLATE LXXX. 



Fig. 1. — Phyllophora Brodicei, natural size. 

 2. — Section of nematheciimi. 

 S. — Filaments fi'om same. 

 4. — Section of frond. All magnified. 



