Alge, by W. H. Harvey.] FLORA OF TASMANIA. 331 
DrsrarB. Native of Mediterranean, and coasts of France and England. Western Australia, at King 
George's Sound. 
The specimens are rather coarser and less gelatinous than those from the south coast of England, but closely 
resemble some that we have received from the Mediterranean. 
2. Crouania insignis (Harv.); fronde robusta elata (pedali et ultra) cartilaginea decomposite ra- 
mosissima, ramis alternis repetite alterne divisis creberrime nodulosis, ramulis cylindraceis vestitis acutis vix 
attenuatis.— Harv. Alg. Exsie. Austr. n. 488.—(Tas. CXCIII. B.) 
Haz. Georgetown, W. H. H. Brown's River, Gunn. 
Disrris. South coast of New Holland. 
Frond 12 or 14 inches long, more than half a line in diameter, tapering toward the apex, excessively 
branched. Branches alternate, 8-10 inches long, erecto-patent, two or three times similarly compounded, the ulti- 
mate ramuli less than an inch in length. All the older parts of the frond are closely nodulose, the whorls of 
peripheric filaments being partially separated, though not so much so as to uncover the axial filament, The 
smaller branches and ramuli are uniformly clothed with filaments, and therefore cylindrical. The peripheric fila- 
ments are not gelatinous, thick, very much branched, the branching dichotomous and divaricate ; their apices are 
blunt. Tefraspores triangularly divided, solitary on the ramuli. Favelle hidden among the ramelle of abortive 
branchlets, formed out of a whole or a half ramellus, reniform, containing very numerous spores. Colour a deep 
brownish-red. Substance soft, but firm. It closely adheres to paper in drying.—PrATg CXCIII. 2. Fig. 1, a 
branch, the natural size; 2, apex of a ramulus; 3, ramellus with a favella; 4, spores; 5, ramellus with tetra- 
spores; 6, a tetraspore :—the latter figures magnified. 
; Gen. CIX. PTILOTA, 4y. 
(Ag. Sp. Alg. i p. 384. Endl. 3rd Suppl. p. 36. J. Ag. Sp. Alg. ii. p. 92.) 
1. Ptilota articulata (J. Ag. Sp. Alg. ii. p. 100; Hook. fil. et Harv. Lond. Journ. iii. p. 409). 
Haz. Georgetown, very common. 
Distris. South coast of Australia. 
2. Ptilota Jeannerettii (Harv. Alg. Exsic. n. 479).—Thamnocarpus Ptilota, Hook. fil. et Harv. 
Lond. Journ. vi. p. 409. i 
Has. Port Arthur, Dr. Jeannerett. Eagle Hawkneck, J. D. H. Southport, C. Stuart. 
Disrris. South coast of New Holland, D. Curdie, W. H. H. 
3. Ptilota Rhodocallis (Harv. Alg. Austr. Exsic. n. 478; Phyc. Austr, t. 44).—Rhodocallis 
elegans, Kiitz. Sp. Alg. p. 670. 
Has. Southport, C. Stuart. 
DisrRrs. Coast of Victoria, at Port Fairy. 
A beautiful species, of a brilliant deep-red colour, which becomes a flaming scarlet in fresh-water. The general 
habit resembles that of Phacelocarpus Labillardieri. 
Gen. CX. THAMNOCARPUS, Harv. 
1, ‘Tharanocarpas Gunnianus (Harv. in Hook. Ic. Pl. t. 662 ; Lond. Journ, vi. p. 409). 
Has. Port Arthur (?), Guan (more probably at Circular Head). Southport, C. Stuart. 
Distris. Also found, but without fruit, in Western Australia, W. H. H. 
We have no new facts to state respecting this curious and little-known plant, except that on Mr. Stuart's 
specimen we find antheridia, similar to those of a Callithamnion, occupying the place of fetraspores. 
