Alga, by W. H. Harvey.) | FLORA OF TASMANIA. 333 
una pusilla pinnata vel vage multifida pinnulis inflexis, altera elongata bipinnata basi ramulis incurvis vage 
divisis fructiferis stipata, pinnis ambitu ovatis, pinnulis oppositis incurvis ereberrimis. —Harv. in Ann. Nat. 
Hist. xv. p. 332; Phyc. Austr. t. 96. 
Has. Southport, C. Stuart. 
DisrRiB. Coast of Victoria, at Port Fairy. 
3. Ballia scoparia (Harv. Alg. Exsic. Austr. n. 502).—Callithamnion scoparium, Hook. fil. et Harv. 
FI. Ant. ii. p. 490. t. 189. 7. 3; J. Ag. Sp. Aly. ii. p. 35. 
Haz. Mouth of the Tamar, and at Port Arthur. 
DistrıB. Antarctic Ocean. 
Gen. CXIII. CORYNESPORA, J. 4j. 
(J. Ag. Sp. Alg. ii. p. 69.) 
1. Corynespora arachnoidea (Harv.); fronde tenuissima arachnoidea (2-3-unciali) e basi dicho- 
tome decomposita ramis lateralibus pluries furcatis obsita, axillis acutis, ramulis ad genicula subcontractis, 
apicibus cylindraceis attenuatis obtusis, articulis longissimis, tetrasporis ovalibus grumosis pedicellatis. 
Has. Georgetown, W. H. H. ; 
Two to three inches high, densely tufted. Filaments excessively slender, nearly of one diameter throughout, 
except in the ultimate divisions, many times dichotomous, the lateral dichotomies not always regular, and then as 
if set with alternate dichotomous branches. The articulations in all parts of the plant are of great length. The 
colour is rose-red. Tetraspores ? (or spores) pedicellate, oval, containing a granular mass, not divided into sporules. 
—It is difficult to examine this plant after having been once dried, as it will not bear remoistening with fresh-water, 
and adheres so strongly to paper that it is impossible to separate it without breaking. 
Gen. CXIV. CALLITHAMNION, Zyngb. 
(Lyngb. Hyd. Dan. p. 122. J. Ag. Sp. Alg. ìi. p. 5. Harv. Phyc. Brit. etc.) 
1. Callithamnion comosum (Harv. Lond. Journ. Bot. iii. p. 451). 
Has. In the Tamar, above Georgetown, abundant. 
9. Callithamnion Plumula (Ag.; Harv. Phyc. Brit. t. 242; J. Ag. Sp. Alg. ii. p. 29).—Con- 
ferva Plumula, Ellis ; Dillw. Conf. t. 50. 
Has. Georgetown, rare, Gunn, W. H. H., Archer. 
DistrIB. Europe. 
In the Tasmanian specimens the ramuli are more squarrose than usual, and in the older parts of the frond 
finally become, through excessive branching, densely fasciculate. 
3. Callithamnion cruciatum ? (Ag.; J. Ag. Sp. Alg. ii. p. 28; Harv. Phyc. Brit. t. 164; Kütz. 
Sp. Alg. p. 649; Harv. Alg. Exsic. n. 545). 
Has. Georgetown, very rare, Gunn, W. H. H. 
DisrarB. Europe. 
The Tasmanian specimens differ from the European chiefly in the ramification or He opp rro e 
ramuli being very generally alternate, not opposite, and sometimes forked, and ssn rachis being angularly ve ag 
not straight. The apices are quite blunt. Possibly it would be better to consider = possint _ 5 stinc 
but representative species. It must however be allowed that its European representative varies y Am ve? 
position of its plumules.—I formerly, by mistake, communicated to Professor Agardh a poor specimen of the follow- 
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