Plate XXXIII. 
Fig. 147. CHYLOCLADIA ARTICULATA. 
Colour. A fine pinky red. 
Substance. Soft, membranaceous ; somewhat gelatinous. 
Character of Frond. Bushy; much branched ; tufted; tubular; strongly constricted through- 
out 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 
{whorled). These branches also forked, and bearing from their constrictions opposite 
or whorled branchlets ; often very much crowded above. 
Measurement. From 1 to 6, or occasionally 12 inches long. 
Fructification. Of two kinds. 1. Clustered spores 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 Ghylocladias, see Plates XXXI, XXXII, and XXXIV. 
Fig. 148. CORALLINA OFFICINALIS. 
Colour. Purplish or lilac when 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 wflth 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 
capsules ; 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 the luxuriance and even character of its branching; most luxuriant 
in deep water. The structure is that of a vegetable growth incrusted with lime. 
65 
K 
