Ser. Rhodosperme^. Fam. Crr/ptonemiacea. 



Plate LXXXIII. 



GLOIOSACCION BROWNII, Harv. 



Gen. Char. Frond bag-like, filled with transparent gelatine, membrana- 

 ceous, composed of three strata; the medtdlari/ stratum of very large 

 gelatinous cells, soon ruptured ; the intermediate of roundish-angular, 

 coloured cells ; the cortical of minute cellules set in vertical filaments. 

 Fructification : 1, ^o\io?<e fiavellidia immersed in the cells of the in- 

 termediate stratum, and composed of numerous confluent nucleoli ; 

 2, tetraspores (not known) ? — Gloiosaccion [Harv.), from y\oLo<j, 

 viscid, and a-aKKo^, a bag or sack. 



Frons sacciformls, siicco gelatinoso Jiyalino repleta,memhranacea, dratis fere trihus 

 contexta ; strata medullari cellidls maximis gelatinosis cito ruptis, intermedia 

 cellulis rotundato-angidatis colaratis, corticali cellulls miniiids vifila verticaita 

 ordinatis canstante. Fruct. : l^favellidia glabosa, in strata intermedia im- 

 mersa, nucleolis pluribus confiuentihus compasita ; 3, tetrasporce ? 



Gloiosaccion Brownii, Harv. 

 "Var. a. memtjranaceum ; bag delicately membi-anous, rose-red. 

 Var. a. membranaceum ; fronde tenui-memhranacea, rosea. 

 Halosaccion hydrophora, Harv. Alg. Austr. Exsic. n. 419 {excl. syn. Post. 



and Ruppr.). 

 Yar.^.fnnum; bag coriaceo-Tuembranous, varying from livid-purple to deep 



blood-red. 

 Var. ^. firmum ; fronde coriaceo-membranacea, livido-purpurea v. viridescenie 



V. rubro-sanguinea. 

 Halosaccion firmum, Harv. Alg. Austr. Exsic. n. 420 {excl. syn. Post, and 



Pup.). 

 Fucus allantoides?, R. Br. in Turn. Hist. n. 4i. p. 105. 

 Hab. Cast ashore from deep water. Australia, R. Brown. Fremantle, 

 Western Australia, W. H. H., George Clifton. Port Phillip, W. H. H. 

 In the Tamar, Tasmania, Rev. I. Fereday, W. H. H., etc. 

 Geogu. Distk. Western and southern coasts. Tasmania. 

 Descr. Root a small conical disc. Frond rising from a cylindrical stipes \-\ 

 inch in leno"th, and \ line in diameter, bag-like, clavate or fusiform or 

 sausage-shaped, 3-12 or 16 inches in length, and from | inch to 2 inches 

 in diameter. Usually the bag is perfectly simple, the younger ones being 

 pear-shaped or obovate, the older more clavate, and, especially in var. a, pass- 

 inf into fusiform ; very rarely the bag becomes once or even twice forked. 

 In all cases the apex is obtuse. When recent the bag is filled with a trans- 



