Plate XXXIII. 



Fig. 147. CHYLOCLADIA ARTICULATA. 



Colour. A fine pinky red. 



Substance. Soft, membranaceous; somewhat gelatinous. 



Char actor of Frond. Busliy; much branched; tufted; tubular; strongly con- 

 stricted throughout at intervals, into longish, inflated joints. Main 

 stems forked [dichotomous) , bearing branches which issue from the 

 constrictions on each side, or all round the stem [vjhorled). These 

 branches also forked, and bearing from their constrictions opposite or 

 whorlcd branchlets; often very much crowded above. ^ 



Measurement. From 1 to 6, or occasionally 12 inches long. 



Fructification. Of two kinds. 1. Clustered siiores in bluntly conical capsules; 

 external. 2. Tetraspores imbedded in the joints of the branchlets. 



Habitat. Our coasts generally. On rocks, &c. between tide-marks. Common. 

 For other Ghylocadias, see Plates XXXI, XXXII, and XXXIY. 



Fig. 148. COKALLINA OFFICINALIS. 



Colour. Purplish or lilac v/hen recent; varying to pinky, or brick-dust red; 

 fading to milk-white. 



Substance. Hard and stony, like coral; but flexible at the joints; exceedingly 

 brittle, when dry. 



Character of Frond. Bushy; tufted; much branched; in thick clumsy joints. 

 Stems simple, bearing stiff, straight, upright, mostly opposite branches 

 of sometimes very unequal lengths. Branches once or twice re- 

 branched. Branchlets exactly opposite, and of regular lengths, giving 

 a feathery outline to each division. Lower joints cylindrical, as long 

 as broad; upper shorter, somewhat wedge-shaped but rounded, and 

 with blunt shoulders. Branchlets cylindrical, with blunt or knobbed 

 tips. 



Measurement. From 2 to 6 inches high, rising from a wide-spread, lilac-red 

 crest. 



Fructification. Only one kind known. Clustered strings of spores in urn- 

 shaped or oval capsides; external; at the tips of the branches or 

 scattered on the sides. 



Habitat. Our coasts generally. On rocks between tide-marks, generally in 

 rock-pools, fringing and covering both sides and bottom. 



Varying very much in tlie luxuriance and even character of its branching; 

 most luxuriant in deep water. The structure is that of a vegetable growth 

 incrusted with lime. 



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