159 
Al/joe of Tasmania. 
43. Callithamnion latissimum, Harv.; caule elongato, frondem 
percurrente, tenui, basi opaco, subsetoso, e (ibris constituto, 
in parte superiore articulato glabro; fronde latissim&, pluries 
pinnata, divisioriibus omnibus alternis; ramis primariis tripi- 
natis, articulatis, pellucidis, glabris ; pinnis similibis sed tenui- 
oribus; pinnulis penultimis (vel plumulis) patentibus, tenuibus, 
flexuosis, simpliciter pinnatis; articulatis diametro 3-4-plo 
longioribus ; sphserosporis minutissimis, sphmricis, brevfe pedi- 
cellatis basin versus pinnellarum ultimarum secundis. 
George Town, V. D. L., R. Gunn, Esq., n. 1308.—Stem 
5-6 inches long, or more, setaceous below, gradually attenuated 
upwards, continued throughout the broadly ovate, excessively 
pinnated frond, opake and subsetose below, pellucid and naked 
above; all the divisions alternate. Main branches very patent or 
horizontal, 2-3 inches long, about half the diameter of the stem, 
pellucid and jointed; the joints 4-5 times longer than broad, triply 
pinnate, the pinn® resembling the main rachis. Pinnules and 
their divisions very slender and patent, filiform, blunt. Colour 
a fine rose red, without any gloss when dry. Substance mem¬ 
branaceous, not very gelatinous. Sphserospores exceedingly 
minute, secund along the ultimate ramuli near their bases, 4-5 on 
each ramulus, sphaerical, on short stalks. 
44. Callithamnion cruciatum, Ag. 
George Town, V. D. L., R. Gunn, Esq. —These specimens do 
not materially differ from the more slender British states of this 
variable but easily recognised species, and are equally distinguished 
by the darkened tips of the branches, caused by the crowding of 
the ramuli about them. 
(To be continued.) 
