Ser. RHoposPERME®. Fam. Ceramiea. 
Prate CCCVIII. 
CALLITHAMNION FASCICULATUM, Zarv. 
Gun. Cuar. Frond rosy or brownish-red, filamentous; stem either opake 
and cellular, or translucent and jointed; branches jointed, one-tubed, 
mostly pinnate (rarely dichotomous or irregular) ; dissepiments hyaline. 
Fruit of two kinds on distinct plants: 1, external ¢etraspores, scattered 
along the ultimate branchlets, or borne on little pedicels ; 2, roundish or 
lobed, berry-like receptacles (favelle), seated on the main branches, and 
containing numerous, angular spores. CALLITHAMNION (4g.),—from 
xaddos, beauty, and Oapnor, a little shrub. 
CaLLITHAMNION fasciculatum; tufted; branches erect, flexuous, level- 
topped; plumules elongate, erect, lmear-obovate, truncate; pinne 
long and flexuous, the lowermost simple, appressed, the upper 
erecto-patent, branching toward the tip; articulations of the 
branches veiny, thrice as long as broad, of the pinne once or twice as 
long as broad, with contracted dissepiments. 
CALLITHAMNION fasciculatum, Harv. in Hook. Br. Fl. vol.ii. p. 343. Harv. 
Man. ed. 2.p.179. Kiitz. Sp. Alg. p. 652. 
Has. At Yarmouth, Mr. Borrer, in Herb. Hooker. 
Goer. Distr. ——? 
Descr. Frond from two to three inches high, nearly bare of branches below, 
much branched and tufted upwards, bushy, capillary; the apices of the 
branches looking, to the naked eye, as if truncated or corymbose. Branches 
long and flexuous, very erect, their upper half closely plumulate. Plumules 
long and narrow, with a linear-obovate or spathulate outline, erect, the 
lowermost pinne quite simple, moniliform, with contracted joints and acute 
terminal cells ; the uppermost gradually longer and more spreading, branch, 
ing at the apex. Articulations of the branches veiny, from three to four 
times as long as broad; of the lesser branches (or rachides of the plumules) 
about twice as long as broad; of the pinnules oval, twice as long as broad, 
with very contracted dissepiments. Tetraspores elliptical, mostly solitary, 
toward the base of a pinnule. Colour a fine purple-red. Substance mem- 
branaceous, adhering to paper. 
ews 
PPA 
I have deferred figuring Cal. fasciculatum of the Brit. Flora to 
this late period, in the hope, disappointed hitherto, that some 
