342 FLORA OF TASMANIA. [Alge, by W. H. Harvey. 
Gen. CXX. ULVA, 4y. 
(Ag. Syst. xxxii. Grev. Alg. Brit. p. 171.—Ulva, Phycoseris, and Crasiola, Kütz.) 
l. Ulva latissima (Lin. Fl. Suec. p. 433; Ag. Sp. Alg. i. p. 407; Harv. Phyc. Brit. t. 171; 
Kütz. Sp. Alg. p. 474). 
Haz. In the Tamar, Derwent, ete.; and probably all along the coast. Generally diffused. 
Gen. CXXI. (EDOGONIUM, Link. 
(Kütz. Sp. Alg. p. 364.—Vesiculifera, Hass. Br. Fr. W. Alg. p. 195.—Tiresias, Bory.) 
1. CEdogonium monile (Berk. et Harv.); filis basifixis brevibus tenuissimis strictiusculis, articulis 
cylindraceis hyalinis diametro 6-8-plo longioribus, sporidiis seriatis globosis terminalibus v. in medio fili 
moniliformiter intumescentibus demum sanguineis.—(Tas. CXCVI. B.) 
Has. In fresh-water, parasitical on water-plants, Gunn. 
Filaments $ inch to 1 inch long, about 5755 inch in diameter, covering the leaves and stems of water-plants 
with a thick, villous, pale-green coating. The articulations are cylindrical, either colourless or tinted with a pale 
green, and containing a few medial granules, dispersed in drying. The sporidia are globose, 4-5 times the diameter 
of the filament, and formed in moniliform strings of 4-8 each, either at the end or in the middle of the filament ; 
the generating cell is conoidal, full of yellow-green endochrome ; the sporidia are at first green, afterwards of a deep 
blood-red, resembling strings of rubies.—A very beautiful species, perhaps referable to Kiitzing's genus Allogonium.— 
Pate CXCVI. B. Fig. 1, the plant, nat. size; 2, some filaments, highly magnified. 
Gen. CXXII. TETRASPORA, Zink. 
(Ag. Sp. Alg. p. 414. Kütz. Sp. Alg. p. 225.) 
l. Tetraspora intricata (Berk. et Harv.); fronde decomposito-laciniata, laciniis angustissimis 
ramosis, ultimis capillaribus intricatis, gonidiis quaternis, maculis ramulorum subuniseriatis. 
Haz. In St. Patrick’s River, 1830, Gunn. 
The single specimen seen having been dried on paper, and very imperfectly displayed, it is impossible to do 
more than guess at its proper form. It seems to be cut up indefinitely into threadlike segments, the lesser ones 
containing often but a single row of quaternate gonidia. Mr. Berkeley remarks that it is related to the other . 
Tetraspore much as Monormia is to the Nostocs. It approaches also to Trypothallus. We regret that the state of 
the specimen forbids its being satisfactorily described or figured. The gonidia are 5255 inch in diameter. 
2000 
Tribe V. OSCILLATORIEE. 
Gen. CXXIII. RIVULARIA, Roth. 
(Ag. Syst. p. xix. Harv. Man. and Phyc. Brit.— PAysactis, ete., Kütz.) 
1. Rivularia nitida (Ag. Syst. p. 25; Wyatt, Alg. Danm. n. 50; Harv. Phyc. Brit. t. 68).— 
Physactis bullata, spiralis, et lobata, eic., Kütz. Sp. Alg. p. 332. 
Has. Mouth. of the Tamar, Guan, W. H. H., etc. Found also at Port Phillip, W. H. H., and 
native of the coasts of Europe. 
The Georgetown specimens are of large size, as usual in plants of that locality, but have all the usual 
characters of the species. i 
Gen. CXXIV. BANGIA, Zyngb. 
(Lyngb. Hyd. Dan. p. 82. Ag. Syst. p. 25. Harv. Phyc. Brit., etc.) 
l. Bangia pulchella (Harv.); filis brevibus basifixis simplicibus erectis cylindraceis violaceo-roseis 
