332 FLORA OF TASMANIA. [4lge, by W. H. Harvey. 
Gen. CXI. GRIFFITHSIA, 4y. 
(Ag. Sp. Alg. ii. p. 126. J. Ag. Sp. Alg. ii. p. 75. Kiitz. Sp. Alg. p. 659.) 
l. Griffithsia corallina (Ag. Syst. p. 145; J. Ag. Sp. Alg. ii. p. 79; Harv. Phyc. Brit. t. 214). 
—G. flabelliformis, Harv. Lond. Journ. ii. p. 450. 
Has. In the Tamar, common. 
Disrris. Native of northern hemisphere. 
2. Griffithsia antarctica (Hook. fil. et Harv. Fl. Ant. ii. p. 488; J. Ag. Sp. Alg. ii. p. 87; Fl. 
N. Zeal. ii. p. 258). 
Hab. Brown’s River, Gunn. Georgetown (a variety?), W. H. H. 
Distr. Falkland Islands, Cape Horn, and New Zealand. 
3. Griffithsia monilis (Harv.); fronde basi radicante ceespitosa dichotoma fastigiata crassissima, 
segmentis erecto-patentibus, articulis diametro sesquilongioribus globoso-inflatis siceitate collapsis et ovali- 
bus ad genicula maxime constrictis, fertilibus conformibus, involucris tetrasporarum eirca genicula verti- 
cillatis.—Harv. in Trans. R. I. Acad. xxii. p. 559. (Tas. CXCV. B.) 
Has. Parasitical on 4/72, at Georgetown, Gunn. 
Disrris. West and south coasts of New Holland. 
A beautiful little species, whose branches resemble strings of ruby-coloured beads. The colour is very quickly 
discharged.—PrATE CXCV. B. Fig. 1, fronds, nat. size; 2, tip of a branch, bearing favellee; 3, a tip, bearing 
sorus of tetraspores; 4, tetraspores from the same :—the latter figures magnified. 
4. Griffithsia setacea (Ag.; J. Ag. Sp. Alg. ii. p. 84; Kütz. Sp. Alg. p. 660; Harv. Phyc. Brit. 
t. 184). 
Has. Georgetown, common. 
DisrRIB. Native of northern hemisphere. 
All the specimens we have seen are barren; the species therefore cannot be ascertained with certainty. 
5. Griffithsia? gracilis (Harv.) ; frondibus capillaribus sursum attenuatis arachnoideis dichotomis 
fastigiatis, ramulis minoribus sæpe secundis, axillis patentibus, articulis cylindraceis diametro multiplo-lon- 
gioribus, apicibus obtusis. : 
Has. Georgetown, W. H. H. 
Fronds 2—3 inches high, very slender, and much attenuated to the apex, pretty regularly dichotomous and fas- 
tigiate, forming flabelliform tufts. Articulations very long, cylindrical. Colour a bright rosy-red, instantly given 
out in fresh-water. Substance soft.—Very few specimens have yet been seen, and these without fructification. The 
species therefore wants further confirmation. 
Gen. CXII. BALLIA, Harv. 
(Harv. in Hook. Lond. Journ. ii. p. 191. J. Ag. Sp. Alg. ii. p. 74. Kütz. Sp. Alg. 663.) 
l. Ballia callitricha (Mont. Voy. Pôl. Sud, p. 94; Kiitz. Sp. Alg. p. 663; J. Ag. Sp. Alg. ii. 
p. 75; Fl. N. Zeal. ii. p. 257).—B. Brunonis, Harv. Lond. Journ. i. p. 191. 4. 9. B. Hombroniana, 
Mont. Pôl. Sud, t. 19. f. 1. Sphacelaria callitricha, Ag. Sp. Alg. ìi. p. 23; Ic. Alg. Eur. t. 6. 
Has. Various parts of the coast. 
Disrris. All through the Southern Ocean. b. 
is 2. Ballia Robertiana (Harv.); ramis minoribus rachidibusque pinnularum cylindraceis (nec ad 
genicula constrictis) distiche plumulatis, plumulis incurvis oblongis oppositis inter se alterne inzequalibus, 
