•256 ALGvE. 



33. Chylocladia. Frond cylindrical, filiform (often con- 

 tracted as if jointed), between gelatinous and cartilaginous, of 

 a pinky-red colour. Fructification of two kinds : spherical ovate 

 or conical capsules, with wedge-shaped or angular seeds ; and 

 imbedded, ternate granules. Grev. * 



34. Gigartina (Gracilaria and Gigartina, Grev.) Frond 

 cartilaginous, filiform, cylindrical or compressed, irregularly 

 branched, of a dull red colour. Fructification ; — capsules con- 

 taining a mass of minute roundish seeds ; and roundish or ob- 

 long, simple granules, imbedded in the fronds of distinct plants. 

 Grev. 



35. Chondrus. Frond cartilaginous, dilating upwards, 

 flat, nerveless, dichotomously divided, of a purplish or 

 livid-red colour. Fructification ; subspherical capsules, in the 

 substance of the frond (rarely supported on little stalks), con- 

 taining a mass of minute free seeds. Grev. 



36. Phyllophora. Frond cartilaginous or membranaceous, 

 of a purple rose-colour,, plane, proliferous from the disk, fur- 

 nished with a more or less imperfect or obscure midrib. Fruc- 

 tification ; capsules containing a mass of minute roundish free 

 seeds ;— and sori of simple granules, in little foliaceous proces- 

 ses. Grev. 



37. SrH^ROCoccus. Frond cartilaginous, compressed, two- 

 edged, linear, distichously branched. Fructification ; mucro- 

 nate capsules, containing a mass of ovate shortly pedicellate red 

 seeds. Grev. 



38. Gelidium. Frond between cartilaginous and horny, 

 compressed, linear, more or less regularly pinnated. Fructifica- 

 tion; capsules imbedded in the substance of the ramuli, con- 

 taining a mass of minute roundish seeds ; and ternate or other- 

 wise compound granides in the ramuli, on distinct individuals. 

 Grev. 



39. Grateloupia. Frond cartilagineo-membranaceous, 

 plane, sometimes pinnated with branchlets or fringed with foli- 

 aceous processes. Fructification ; minute aggregated tubercles 

 furnished with a pore and containing a mass of free elliptical or 

 roundish seeds. Grev. 



,40. Ch.et6spora. Frond subcartilaginous, filiform, branched, 

 rose-coloured, ultimate ramuli setaceous, swelling into lanceolate 

 receptacles, composed of naked branched filaments radiating from 

 an axis, in the centre of which is situated the obscure fructifica- 

 tion (minute seeds or capsules). Grev. 



41. Ptilota. Frond compressed or flat, pectinato-pinnate, 

 of a red colour, between membranaceous and cartilaginous. 



