298 FLORA OF TASMANIA. [Alge, by W. H. Harvey. 
bulbosis bulbo oblongo solido sursum filiformibus alterne decompositis, secundariis ramulisgue guagua- 
versis sparsis obtusis basi attenuatis. 
Has. East coast, Gunn. Derwent, Oldfield. 
Frond 3-4 inches high, branched from the base. Primary branches numerous, each of them swelling at base 
into an oblong, solid bulb, from 3-2 of an inch long and 1-2 lines in diameter. Beyond the bulb the branches are 
filiform, twice as thick as hog's-bristle, and alternately decompound, the lateral branches directed to all sides. Se- 
condary branches virgate, simple, having a few scattered ramuli, which are obtuse at the-apex and much attenuated 
to the insertion. 
Dried specimens do not readily recover their form on being remoistened, and we are not quite certain as to 
the internal structure of the frond. There is some appearance of internal septa at short intervals, and this character, 
added to the form of the ramuli, has induced us to place this curious plant provisionally in Chondria. Until fruit 
shall have been found, its place in the system cannot be finally ascertained. The habit is that of a Rhabdonia. 
6. Chondria fusifolia (Hook. fil. et Harv.).—Laurencia — Hook. fil. et Harv. in Lond. 
Journ. vi. p. 401. 
Has. Sullivan's Cove, Dr. Zyall. 
Gen. XLVII. RYTIPHL(EA, dg. 
(Ag. Sp. Alg. ii. p. 50. Harv. Ner. Austr. p. 31. Kütz. Sp. Alg. p. 844.) 
1. Rytiphloea simplicifolia (Harv.); fronde foliacea costata a costa repetite prolifera et demum 
spurie ramosissima, foliis linearibus planis v. subcanaliculatis costa tenui percursis opacis tenuissime trans- 
versim striatis obtusis basi in petiolo attenuatis, stichidiis linearibus involutis fasciculatis e costa enatis.— 
Harv. Alg. Austr. Exsie. n. 133. 
Has. Tasmania, rare, R. Gunn. 
DistriB. South coast of Australia, rare, W. H. H. 
Primary leaf from an inch to 3 or 4 inches long or more, from 1-2 lines wide, quite flat, and traversed by a 
slender midrib, from which numerous similar leaves, 1-3 inches long, are thrown out proliferously, without any 
definite order. "These in like manner bear a third, and those a fourth series of similar leaves, until there results a 
bushy, much compounded frond, composed of simple leaflets. All the Jeaflets are linear, obtuse, tapering to the 
base into an imperfect petiole, and are of a closely-cellular substance, rather opaque, and very finely striate trans- 
versely. The colour is a dull deep-red. Stichidia tufted, linear, issuing from the midribs. 
In habit this plant resembles a very narrow form of Lenormandia spectabilis, but is of much closer cellular 
substance, and the retieulations are not diagonal, as in all the species of Zenormandia. Perhaps it would range 
better in Dictymenia than in Rytiphlea. 
2. Rytiphloea australis (Endl. 3rd Suppl. p. 48; Mont. Fl. Canar. p. 154, in not.).—R. austral- 
asica, Harv. Ner. Austr. p. 32; Swan Riv. Alg. n. 65. p. 538; Aly. Eesic. Austr. n. 134; Phyc. Austr. 
5.27. 
Haz. Southport, C. Stuart. 
Disrrts. Common on the western and southern coasts of Australia. 
Gen. XLVIII. BOSTRYCHIA, Mont. 
(Mont. Hist. Cub. Bot. p. 39. Harv. Phyc. Brit. t. 48. Ner. Austr. p. 58. Kütz. Sp. p. 839.) 
l. Bostrychia mixta (Hook. fil. et Harv. ; Lond. Journ. iv. p. 270; Harv. Ner. Austr. p. 70; El. 
N. Zeal. ii. p. 225; Harv. Alg. Exsic. n. 141). 
Haz. On stones, above half-tide. Port Arthur, W. H. H. 
