Plate XII. 



Kg. 45. ASPEROCOCCUS TURNERI. 



Colour. Pale olive, wlien young; olive-brown, in age. 



Substance. Thin; delicately membranaceous; semi-transparent. 



Character of Frond. Tubular; inflated; oblong; obtuse at tlie tips; suddenly 

 contracted at base into a short stem. Contracted at intervals, as if 

 tied in, sausage fashion! 



Measurement. From 8 inches to many feet in length; from J to 2 or 6 

 inches thick. 



Fructijicatio7i. Dot-like clusters of seeds [spores) scattered over the surface 

 of the frond. 



Habitat. Our coasts generally. On stones, and the larger algae, between 

 tide-marks. 



Known from A. compressus by being inflated; from A. echinatus, by its more 

 transparent dehcate texture, constrictions, and greater inflation of frond. 



Fig. 46. ASPEROCOCCUS ECHINATUS. 



Colour. Yellowish- olive, tending to brown. 



Substance. Membranaceous, but coarse, and sub-opaque. 



Character of Frond. Tubular; narrow; more or less tapering to the base; 

 obtuse, or somewhat tapering, at the tips (the plate does not give 

 the obtuse form, which is nevertheless common). 



Measurement. From 2 inches to 2 feet long; from a hog^s bristle to i an 

 inch in diameter, i.e. thick. 



Fructification. Dot-like clusters of seeds (spores) scattered over the surfaces 

 of the frond. 



Habitat. Our coasts generally. On rocks and alg^ between tide-marks. 

 Common. 



The great variety of size in this plant is puzzUng to young collectors. But 

 even when not thicker than a liocjs hristle (a curiously favourite measure with 

 phycologists !), it is still tiibular ; and like its relatives {congeners), often full of 

 sand ! 



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