Ser. Melanosperme^e. Fam. Fucacea. 



Plate LVI. 



CYSTOPHORA BOTRYOCYSTIS, « 



Gen. Char. ifoo£ scutate. Frond pinuately decompound, dendroid, with 

 distinct stein, branches, and ramuliform leaves. Vesicles stipitate, 

 simple, rarely absent. Receptacles pod-like, torulose, or moniliform, 

 developed, in the ramuli. Scaphidia hermaphrodite. Spores obovoid. 

 — Cystophora (/. Ag.), from /cvans, a bladder, and c^opew, to bear. 



Radix scutata. Frons pinnatim decomposita, dendroidea, caule proprio, ramis 

 foliisque ramuliformibus donata. Vesicula stipitatte, simplices, raw dejici- 

 entes. Receptacula silirjuaformia toridosa v. nodulosa, apice ramulorum evoluta. 

 Scaphidia hermaphrodita . 



Cystophora botryocystis ; stem subcompressed, pinnate or bipinnate; 

 pinnae issuing from the flat side of the stem, reflexed at base, simple 

 or again pinnate ; vesicles numerous, in a dense raceme at the base of 

 the branches, ellipsoid or obovate, obtuse; ramuli filiform, simple or 

 once forked, changing into torulose, terete receptacles. 



C. botryocystis; caule subcompresso pinnato v. bipinnato i pinnis e latere piano 

 caulis egredientibus basi retrojlexis, simplicibus pinnatisve ; vesiculis pluribus 

 ad basin ramorum dense racemosis ellipsoideis obtusis ; ramulis filiformibus sub- 

 simplicibus in receptacula toridosa cylindracea abeuntibus. 



Cystophora botryocystis, Sond. in Linn. v. 25. p. 670. Harv. Alg. Austr, 

 Exsic. n. 14. 



Hab. Cast ashore from deep water. Holdfast Bav, Dr. F. Mueller. Brigh- 

 ton beach, Port Phillip, W. H. H. 



Geogr. Distr. South coast of Australia, rare and local. 



Descr. Root discoid, an inch in diameter. Fronds several from the same base, 

 1-3 feet long, a line or two in diameter, flattened at the sides, or somewhat 

 squared, once or twice pinnated. In full-grown specimens the lower part 

 of the stem and of the larger branches is generally denuded, and distantly 

 tuberculated with the bases of fallen branches. The branches issue from 

 the flattened sides of the stem, and are inserted either horizontally, or are 

 somewhat deflexed at their origin ; the lower branches are pinnated, the 

 upper simple. The pinna are three or four inches long, very patent, issuing 

 from a flexuous rachis, their upper portion densely clothed with imbricated 

 ramuli (leaves) ; their lower as densely set with numerous vesicles. Some- 

 times the whole pinna is nearly changed into a raceme of vesicles. The 

 ramuli are |-f inch long, simple or once forked, filiform or slightly clavatc, 

 and in fertile specimens are changed into torulose receptacles. The vesicles 

 are egg-shaped, very obtuse, about two lines in length, borne on stalks 

 shorter than themselves. The receptacles contain numerous spore-cavities, 



