Ser. KiiODOSPBRUE^. Tarn. Ceramiacece. 



Plate CLXVIIT. 



BALLIA SCOPARIA, iiarv. 



Gen. Char. Frond filiform, rigid, dendroid ; the stem and brandies co- 

 vered with a plexus of hair-like, short fibres ; ramuli pellucidly arti- 

 culate, piimately decompound. Fructijication : 1, invoincvate /avellce 

 terminating short pinnse, and containing numerous angular spores ; 

 2, tetraspores borne on the hair-like fibres of the stem and branches. 

 — Ballia {Harv.), in honour of Miss Anne E. Ball, a distinguished 

 Irish algologist. 



Frons filiformis, rigida, dendroidea ; caulis ramique plexu filorum, brevium quasi 

 hirsuti ; ra?nuli pellucide articulati, pinnatim compositi. Fruct. : \,favellce 

 invohtcrata in pinnula abbreviata terminales, sporas nmne7-osas angulatas fo- 

 ventes ; 3, tetrasporce triangule divisfs, infilh cauUnis evolntfe. 



Ballia scoporia ; lesser branches and ramuli alternate, very erect, irregu- 

 larly subpinnate ; ramuli scattered or secund, subulate, very acute, 

 often secundly spinigerous toward the extremity ; articulations cylin- 

 drical, about thrice as long as broad. 



B. scoparia ; 7'amis minoribus ramuVisque alternis adpressis vage siibpinnatis, ra- 

 mulis sparsis secimdlsve subulatis acutissmis apicem versus stspissime secuude 

 spinuligeris ; articuUs diametro subtriplo longioribus. 



Ballia scoparia, Harv. Alg. Austr. Exsic. n. 502. Harv. in Hook. fil. Fl. 

 Tasm. v. 2. p. 333. 



Callithamnion scoparium, Hook. fit. and Harv. in Loud. Joiirn. v. 4. p. 173; 

 Fl.AnL V. 3. p. 490. t. 189./. 3 ; Fl. N. Zeal. v. 2. p. 259. 



Hab. Port Pairy, Port Phillip Heads, Western Port, W. H. H. Wilson's 



Promontory, Dr. Mueller. 

 Geogr. Distr. Falkland Islands and Cape Horn. New Zealand. Tasmania. 



Descr. Root stupose. Fronds densely tufted, 3-8 inches long, flabellately 

 much branched, fastigiate. The stem and primary branches are subdicho- 

 tomous, rope-hke, and densely clothed with short, curled, irregularly di- 

 vided, hair-like ramelh, not \ line long. The lesser branches (penultimate or 

 plumules) are pellucidly articulate, naked, crowded, or subdistant, \-\ inch 

 long, very erect, irregularly bipinnate or subtripinnate ; the pinnae and pin- 

 nules are alternate, very erect, subulate, tapering to a fine point, and very 

 often furnished near the extremity with several unilateral subulate spines. 

 The articulations are pretty generally thrice as long as broad. Involucres 

 sessile ou the aides of the lesser branches (plumules), composed of very nu- 

 merous, incurved, whorled ramuh. No favella found in the specimens ex- 

 amined. Tetraspores unknown. Colour a very dark brownish-purple, 



