Ser. Rhodosperme^. Fam. Oryptonemiacea. 



Plate CXXXVIII. 



CHYLOCLADIA MUELLERI, Haw. 



Gen. Char. Frond terete or subcompressed, rarely nodoso-articulate, 

 alternately decompound, tubular ; periphery formed of angular cells. 

 Fructification : \, conical, external conceptacles, opening by a pore, 

 containing a favelloid nucleus, surrounded by a web of filaments ; 

 3, triangularly parted, scattered tetraspores. — Chylocladia [Grev.), 

 from ')(yXo<i, juice, and K\aho<^, a branch; the tube contains watery 

 fluid. 



FroHS teres v. mlcompresm, nunc nodosa- ariiculata, alterne decomposita, tuhn- 

 losa ; tubo succo aqnoso repleto ; strata peripJierico ex cellnlis rotundato- 

 angidatis contexto. Fruct.: 1, cystocarpia simpUcia, intra pericarpiiim externum 

 conicum carpostomio demum apertum inclusa, reticulo arachnoideo ciftcta ; 

 2, tetraspores triangide divisce, sparse^. 



Chylocladia Mtielleri ; frond membranous, purple-red, di-trichotomous, 

 nodoso-articulate ; internodes linear or elliptic-oblong, all separated 

 by slender, short pedicels ; conceptacles scattered on the internodes, 

 hemispherical. 



Ch. Muelleri ; fronde memhranacea I'nbro-purpurea di-trichotonia fastigiata 

 nodoso-articidata, internodls (articulisve) linearibus v. elliptico -oblong is, 

 omnibus pedicello brevissimo filiformi sejunctis, cystocarpiis sparsis hemi- 

 sphcericis. 



LoMENTAEiA (Gastroclonium) Miillevi, Sond. in Linn. v. 25. p. 693. 



Hab. Lefebre's Peninsula, Dr. F. Mueller, 1847. At Carnac island, W. 

 Australia, 1854, Geo. Clifton. 



Geogu. Distr. Western and southern coasts of Australia. 



Descr. Root discoid. Stem very short, solid, cartilaginous, breaking up into nu- 

 merous ti'ichotomous, secondary fronds, 4-6 inches in length. Branches 

 fastigiate, pretty regularly trichotomous, constricted into joint-like, linear or 

 oblong internodes ; every internode generally giving birth at its summit to 

 3, or sometimes to two similar internodes. All the internodes are separated 

 by very slender filiform nodes (or pedicels) about ^ line in length : the ter- 

 minal internodes are shorter and broader than the rest; the basal ones fre- 

 quently long and pyriforra. The substance is membranous, but not very thin, 

 tenacious, and long resisting fresh-water ; the membrane is composed of a 

 layer of large, hyaline, subquadrate interior cells, protected externally by 

 several rows of mnnute, coloured cellules. Conceptacles minute, scattered 

 irregnilarly on the internode, prominent, containing within a large hollow 



