Plate XLIII. 



Fig. 194. CYSTOCLONIUM PURPURASCENS. 



Colour. A dull, purplish-red; becoming redder in fresh water; pinky towards the tips. 



Substance. When fresh, thick; fleshy; semi-transparent and very brittle. When dry, 

 becoming tough, and shrinking considerably. 



Character of Frond. Thread-shaped {Jtliform), long, bushy, excessively branched. 

 Stem generally undivided; bearing long alternate spreading branches tapering 

 to each end. Branches eitlier simple or forked, bearing a second and third 

 set of similar character. Branchlets many times divided (almost in tufts), 

 scattered both on stem and branches; with very acute tips. Koot fibrous. 



Measurement. From 6 inches to 2 feet long. 



Fructification. Of two kinds. 1. A mass of spores in globose capsules; formed in 

 the branchlets; swelling them out. 2. Tetraspores imbedded in the lesser 

 branches. 



Hahitat. Our coasts generally. On rocks, stones, and algae. Between tide-marks. 

 Very common. 



Collectors will do well to accustom themselves to the new name of this plant, 

 Cystoclonium purpurascens, as Dr. Harvey has no hesitation in declaring that it 

 was erroneously placed among the Hypneas. The name Eypnea is accordingly 

 dropped altogether. 



Fig. 196. GRACILARIA MULTIPARTITA. 



Colour. A dull purplish-red; becoming redder in fresh water; pinky towards the tips. 



Substance. When fresh, thick; fleshy; semi-transparent and very brittle. Wlien dry, 

 becoming tough, and shrinking considerably. 



Character of Frond. Flat; narrow; repeatedly but irregularly forked or divided, 

 from the base; at one level, as if cut out. Divisions {lacinice) narrow-wedge 

 shape; their tips acute. 



Measurement. From 4 to 12 inches long. 



Fructification. Of two kinds. 1. A mass of spores in conical, very prominent 

 capsules; external; sessile on the surface of the frond-divisions. 2. Tetraspores 

 imbedded in the same. 



Habitat. South coast of England. On rocks, &c. in deep water. Very rare. 

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