Ser. GOXGYLOSrEKME.E. (83) Fam. CERAMIACEiE. 



Plate XCIX. 

 MICKOCLADIA GLANDULOSA.— G^re?). 



Gen. Char. — Frond subcartilaginous, filiform, compressed, formed of three strata ; axis 

 consisting of a rather thick articulated filament, surrounded by a single series of 

 very large oval, coloured, vertical cells, the periphery of minute compressed cellules. 

 Fnictification of two kinds, on distinct plants : 1. Favellse, roundish, sessile, sur- 

 rounded at the base by several spine-like, incui-ved, involucral ramuli ; 2. Tetra- 

 spores, triparted or cruciate, immersed in the ramuli. Name from fnKphs, "small," 

 and kAoSos, "a branch." 



MiCROCLADiA glandulosa. — Grev. Alg. Brit. p. 99, t. 13 ; Hook. Br. Fl. vol. ii. 

 p. 293 ; Wyatt, Alg. Danm. No. 68 ; Kutz. Phyc. Gen. p. 382; Endl. 

 3rd Suppl. p. 36 ; Harv. P. B. plate 29 ; Harv. Man. p. 160 ; Harv. 

 Sijn. p. 130 ; Atlas, plate 51, fig. 230 ; /. G. Agardh, Sp. Gen. Alg. 

 vol. ii. p. 151. 



Delesseria glandulosa. — Ag. Sp. Alg. vol. i. p. 182 ; Ag, Syst. p. 251 ; Jones <& 

 Kingst. Fl. Devon, part 2, p. 66. 



Fpcus glandulosm. — Soland. MS. ; Turn. Hist. t. 38 ; E. Bot. t. 2135. 



Hab. — On rocks in the sea, on Algfe and sponges, near low-water mark, and to a greater 

 depth. Rare. Annual. Summer. Budleigh, Salterton, and Torquay {Mrs. Griffiths) ; 

 Falmouth {Miss Warren) ; Teignmouth {Mr. Ralfs). 



Geogr. Dist. — As above ; Atlantic shores of France and Spain ; Marseilles {Kiltzing) ; 

 Kamtschatka {Agardh). 



Desceiption. — Root composed of small branching fibres. Frond, 

 densely tufted, one to two inches high, and from one-sixth to one-fourth 

 of a line in diameter, much and repeatedly branched from the base in 

 a somewhat irregularly dichotomous manner ; branches distichous, some- 

 what zig-zag, erecto-patent, giving it a roundish outline ; the axils wide 

 and rounded ; the ultimate ramuli short, rather obtuse, and somewhat 

 inciu^'ed. Structure : the axis consists of a simple, rather stout, 

 articulated filament, composed of roundish oblong cells, around which 

 are built endwise a single layer of oblong, vertical, coloured cells, and 

 these are covered by a thin coating of minute compressed cellules, 

 forming the periphery. When this is viewed from without, it presents 

 the appearance as if the cellules were disposed in large areolae, with 

 transparent interstices, from the large coloured cells beneath appearing 

 through them. Substance rather firm and cartilaginous in the older 



