Alga, by W. H. Harvey.) FLORA OF TASMANIA. 315 
2. Gelidium asperum (Grev.; Kütz. Sp. Alg. p. 475; J. Ag. Sp. Alg. ii. p. 475). 
Han. Georgetown, Gunn. 
Distris. South coast of Australia. 
3. Gelidium glandulefolium (Hook. fil. et Harv. in Lond. Journ. vi. p. 406 ; J. Ag. Sp. Alg. ii. 
p. 474; Kütz. Sp. Alg. 766; Phyc. Austr. t. 18). 
Has. At Circular Head, Mrs. Smith. Georgetown, W. H. H. 
Disreıs. South coast of Australia, 
Gen. LXXII. NIZYMENIA, Sond. 
(Sond. in Linn. xxvi. p. 520.) 
1. N. australis (Sond. l. c.). 
Has. Southport, C. Stuart. 
DisraiB. Wilson's Promontory, Dr. Mueller. Port Phillip Heads, W. H. H. 
Root a large, expanded, fleshy disc. Stems many from the same base, 4-6 inches high, about 1j line in 
breadth, compressed and thickened below, flattening upwards, much branched in an irregularly pinnate, twice or 
thrice decompound order. Pinne and pinnule patent, opposite or scattered, linear, obtuse, much constricted at 
their insertion as if stalked; the smaller ones resembling leaflets. -4pices either rounded and very obtuse, or minutely 
notched. . Margin quite entire and flat. Colour a fine clear red, becoming brighter in fresh-water. Substance rigid 
when dry, tough, coriaceo-corneous. Structure very dense; the medullary structure composed of closely-interlaced 
filaments occupying three-fourths of the breadth; the intermediate cells rather small.—In distributing my Austra- 
lian Alge, several specimens of this plant were inadvertently sent out under n. 885, as “ Areschougia conferta." 
The plant originally so named by me is different, and a true Areschougia. The present plant bears a striking ex- 
ternal resemblance to it, but is broader, more regularly pinnate, and destitute of costa, and the internal structure 
quite different. I have not seen the fruit, which is described by Sonder in the memoir above quoted. 
Gen. LXXIII. HYPNEA, Lamour. 
(J. Ag. Sp. Alg. ii. p. 438. Kiitz. Sp. Alg. p. 758.) 
1. Hypnea seticulosa (J. Ag. Sp. Alg. ii. p. 446).—H. charoides, Sond. Hook. fil. et Harv. Alg. 
Tasm. Lond. Journ. vi. p. 406. 
Haz. Georgetown, R. Gunn, W. H. H., etc. 
Distri. Coasts of Australia, Japan, China, and the Pacific Islands. 
2. Hypnea episcopalis (Hook. fil. et Harv. Lond. Journ. vi. p. 406; J. Ag. Sp. Alg. ii. p. 443). 
Has. Georgetown and Port Arthur. i 
DisrnrB. West and south coasts of Australia. 
3. Hypnea planicaulis (Harv.); fronde latolineari plana subdistiche ramosissima decomposite 
pinnata, ramis majoribus applanatis seticulosis crebre bi-tripinnatis, pinnis pinnulisque gracilibus paten- 
tibus subulatis acutis nunc apice incrassatis cirrhoso-hamatis, cystocarpiis globosis inflatis ad latera pinnu- 
larum sessilibus.—Harv. Alg. Basic. n. 342. : 
Has. Georgetown. 
Disrurs. South coast of New Holland. = 
Fronds densely tufted, 8-12 inches high, and as much in expansion, — ——P— in a pretty 
regularly distichous pinnate order. Main stem quite flat, one to two lines in breadth, having several lateral similar 
