216 CRYPTOGAMIA 



* * * * Variously coloured, cartilaginous, continuous,, much branched ; 

 branches narrow, generally cylindrical. Marine. 



133. GELIDIUM. Frond linear, very narrow, plane, nerveless, 



more or less regularly pinnated ; fructification 1. cap- 

 sules imbedded in the substance of the branchlets contain - 

 ing a mass of minute roundish seeds ; 2. ternate or other- 

 wise compound granules in the branchlets, on distinct in- 

 dividuals. 



134. LAURENCIA. Frond narrow, cylindrical or compressed, be- 



tween cartilaginous and gelatinous, irregularly branched ; 

 fructification 1. ovate capsules, containing a cluster of 

 pear-shaped seeds fixed by their base ; 2. ternate granules 

 imbedded in the branchlets. 



135. PLOCAMIUM. Frond compressed, very narrow, cartilagi- 



nous, much branched ; branches spreading, the external 

 ones pectinate ; fructification 1. granules imbedded in the 

 branchlets ; 2. spherical lateral capsules. 



136. LOME NT ART A. Frond tubular, subgelatinous, round or com- 



pressed, and often contracted at intervals as if jointed, 

 much branched ; fructification 1 . spherical, ovate, or co- 

 nical capsules ; 2. imbedded ternate granules. 



137- POLYIDES. Frond cylindrical, cartilaginous and solid, 

 branched, the branches fastigiate; fructification naked 

 spongy warts composed of radiating filaments, among 

 which the seeds are imbedded. 



138. GIGARTINA. Frond cylindrical, filiform, subcartilaginous, 



continuous, much branched; fructification 1. spherical 

 sessile capsules ; 2. tubercles imbedded in the branch- 

 lets. 



139. RHODOMELA. Frond cylindrical, filiform, much branched, 



coriaceo-cartilaginous ; fructification L subglobose cap- 

 sules, containing free pear-shaped seeds : 2. pod-like re- 

 ceptacles with imbedded ternate granules. 



