334 FLORA OF TASMANIA, [Alge, by W. H. Harvey. 
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ing species, under the name “ eruciatum," having been misled by external resemblance, The species are abundantly 
distinct, the following being one of large size, originally described by me as ** Spyridia pellucida." 
4. Callithamnion mucronatum (J. Ag.) ; fronde elata (pedali et ultra) ultra setacea sursum longe 
filis stuposis quasi hirsuta et corticata decomposite ramosissima, ramis setaceis pellucide articulatis virgatis 
alterne ramosis erecto-patentibus strictis ad genicula pinnatis, pinnis oppositis simplicibus subulatis versus 
apicem densissimis acute mucronatis, favellis ramulos terminantibus.—J. Ag. Sp. Alg. i. p. 29; Harv. 
Alg. Exsie. n. 546. Spyridia? pellucida, Harv. in Lond. Journ. Bot. ii. p. 449. 
Has. At and above Georgetown, common. 
Disrris. Western Port, Victoria. 
Root a mass of matted fibres, often an inch in diameter. Stems many from the same base, a foot or more in 
length, twiee as thick as hog's-bristle, and appearing still thicker from the stupose filaments which densely cover 
them for more than half their length. These principal stems are sparingly divided, but emit throughout their length 
a profusion of closely-placed setaceous branches, 4-6 inches long, and once, twice, or thrice alternately compounded, 
the ultimate divisions being from half an inch to an inch in length. All the axils are acute, and the branches and 
ramuli erecto-patent. The branches and ramuli are pellucidly articulate, and each node bears a pair of minute, subu- 
late, mucronate pinnules, 1-2 lines long, and generally simple, sometimes very erect and close-pressed, sometimes 
more patent. Colour a deep rose-red. Substance somewhat cartilaginous, rather rigid.— By right the specific name 
“pellucidum,” published in 1844, ought to be retained; but I waive priority in favour of the more appropriate one 
conferred in 1851 by Professor Agardh, who had however a miserably imperfect specimen to describe from. The 
species varies much in size, and somewhat in other respects, but is strongly marked by its mucronate, subulate pin- 
nules. 
5. Callithamnion Turneri, var. repens (J. Ag. Sp. Alg. ii. p. 23; Harv. Phyc. Brit. t. 179; 
Harv. Alg. Exsic. n. 521.) —Conferva repens, Dilho. 
Has. On Xiphophora, at Port Arthur, JV. H. H, 
Disrris. Europe. 
6. Callithamnion flaccidum (Hook. fil. et Harv. Lond. Journ. Bot. iv. p. 273; Fl. Antarct. ii. t. 
188. f. 1; Kütz. Sp. Alg. p. 648; J. Ag. Sp. Alg. ii. p. 31). 
Has. Tasmania, Gunn. 
DisrnrB. Antarctic Ocean. 
The specimens are not in good order. 
7. Callithamnion latissimum (Harv. Lond. Journ. Bot. iii. p. 452; J. Ag. Sp. Alg. ii. p. 50). 
—Phlebothamnion latissimum, Kfz. Sp. Alg. p. 656. 
Has. Abundant in the Tamar. 
8. Callithamnion angustatum (Hook. fil. et Harv. in Lond. Journ. Bot. vi. p. 412; J. Ag. Sp. 
Alg. ii. p. 64). | 
Haz. Georgetown, rare, Gunn, W. H. H. 
9. Callithamnion violaceum (Harv.) ; cespitosa, purpurea, frondibus capillaribus basi in funiculis 
intertextis sursum longe filis radicantibus stuposis pellucide articulatis decomposito-pinnatis, ramis quoquo- 
versum egredientibus basi pinnatis apice bipinnatis, plumulis simpliciter pinnatis, pinnulis patentibus fili- ' 
formibus elongatis, articulis ramorum diametro sextuplo ramulorum triplo longioribus, tetrasporis ad pin- 
nulas sessilibus subsolitariis globosis.— Harp. Alg. Exsie. n. 517. 
Haz. On the woodwork of the jetty at Georgetown, W. H. H. 
