320 FLORA OF TASMANIA. | Aige, by W. H. Harvey 
subpalmatifida dilute rubra membranacea, margine simplici, cystocarpiis numerosissimis per totam frondem 
sparsis. 
Han. East coast, R. Gunn. 
Fronds tufted, on a short filiform stipes, broadly cuneate, 4-6 inches long and 3-4 wide, vertically cleft in a 
subpalmate manner, the margin flat and without lobes. Substance membranaceous, thin. Colour a fugacious red, 
changing to greenish. Cystocarps very numerous.— We have seen but few specimens, hardly sufficient to establish 
the species, and yet we do not know to what other species to refer them. They do not accord with any state of 
R. polymorpha, aud yet they approach that species, especially in the fructified specimens. In external habit there 
is a near resemblance to some forms of R. palmata, but the structure and colour are different. 
Treier XI. CRYPTONEMIACEZ. 
Gen. LXXXV. DASYPHL(EA, Mont. 
(Mont. Prod. Phyc. Ant. p. 8. Voy. Pôl. Sud, p. 100. Kütz. Sp. Alg. 757. J. Ag. Sp. Alg. ii. p. 215.) 
l. Dasyphlea Tasmanica (Hook. fil. et Harv. Lond. Journ. Bot. vi. p. 406; J. Ag. Sp. Alg. ii. 
p. 216; Harv. Phyc. Austr. t. 115). 
Has. Georgetown, rare, Mrs. Smith. 
DrsrRIB. South coast of Australia, Curdie, W. H. H. 
Gen. LXXXVI. GULSONIA, Haro. 
(Harv. in Ann. Nat. Hist. xv. p. 334.) 
Frons gelatinoso-membranacea, teres, nodoso-annulata, decomposite ramosa, ex tubo centrali amplo 
articulato monosiphonio filis anastomosantibus longitudinalibus laxe circumdato, et filis horizontalibus ex- 
/currentibus dichotomis fastigiatis muco hyalino firmiori inclusis constituta. Fructus . 
1. Gulsonia annulata (Harv, l. c. p. 334). (Tas. CXCIII. A.) 
Has. Georgetown, rare, W. H. H. 
Distris. Western Port, Victoria. 
Fronds densely tufted, 6-8 inches long, decompoundly much branched; the branches and their divisions and 
ramuli irregularly scattered, all tapering to the base and apex, and all annularly constricted at short intervals; the 
nodes swollen and deeply coloured ; the internodes pale, like very narrow transverse rings. A cross section shows a 
very large central tube, surrounded by a narrow stratum of longitudinal filaments, from which radiate toward the 
circumference dichotomous, callithamnoid, fastigiate filaments, whose branches are separated by pellucid jelly of firm 
consistence, a layer of which also forms a pellucid envelope of the branch. A longitudinal section shows that the 
central tube is septate, the septa at intervals of 7 or 8 diameters apart, and that the longitudinal filaments anasto- 
mose into a laxly netted, filamentous sheath, enclosing the central tube. The filaments of the periphery are thrown: 
off irregularly from the outer face of the sheath. Colour a fine pinky-red, given out in fresh-water. Substance very 
soft.— Until the fruit shall be discovered, the position of this genus must be doubtful. At present I am disposed to 
think it allied to Catenella. It may also be compared with Gloiopeltis, Endocladia, and Gattya.—Pıarz CXCIII. A. 
Fig. 1, a frond, nat. size; 2, transverse semisection ; 9, peripheric filaments; 4, longitudinal section :—the latter 
figures magnified. 
Gen. LXXXVII. ARESCHOUGIA, Harr. 
d (Harv. in Trans. R. I. Acad. xxii. p. 554.) 
Frons linearis, compressa, immerse costata, distiche ramosissima, e filo centrali articulato et stratis 
