694 
IX. ALGA!. 
[ Rhodophyllis . 
rounded. Conceptacles marginal. Tetraspores scattered towards the tips of 
the segments. — Cladhymenia, Harv. in Lond. Journ. Bot. iv. 540 ; Ner. 
Austr. t. 32 (tetrasp. incorrect) ; J. Ag. Syst. Alg. ii. 386. Callophyllis, 
Kuetzing. 
Chalky Bay and Preservation Harbour, Lyall. (Tasmania.) 
3. R. membranacea, Hook. f. and Harv. in FI. N. Z. ii. 247. t. 117. 
Frond similar to that of R. Gunnii, dotted over with red specks, often pro- 
liferously fimbriate ; segments alternate ; primary broad ; secondary narrow ; 
ultimate linear-oblong, subacute, narrowed at the bases ; axils rounded. 
Conceptacles marginal. Tetraspores confined to the ultimate segments. — 
Rliodymenia and Halymenia, Harv. in Lond. Journ. Bot. vi. 405 and 448. 
Stictophyllum, Kuetzing. Euthoria, J. Ag. Sp. Alg. ii. 385. 
East coast, Colenso ; Cook’s Straits, Lyall. (Tasmania.) 
4. R. (?) angustifrons, Harv. in El. N. Z. ii. 247. Fronds densely 
tufted, 2-3 in. high, membranous, deep red, excessively dichotomously or 
irregularly branched from a narrow base ; segments divaricate, dichotomous, 
3-multifid, linear, in- broad ; terminal often secund, obtuse or acute ; axils 
rounded. Fructification unknown. 
Port Nicholson and Bluff Harbour, Lyall. — Genus doubtful. 
5. R. (?) lacerata, Harv. in El. N. Z. ii. 247. Frond rose-red, deli- 
cately membranous, subdichotomous, narrowed into a cartilaginous filiform 
stipes; primary segments broad; secondary narrower, dichotomously multi- 
fid ; ultimate elongate, attenuate, almost subulate, here and there sparingly 
toothed. Fructification unknown. 
Port William, on rocks, Lyall. — Genus doubtful. 
72. DASYPHLCEA, Montagne. 
Frond rose-red or purple, cylindric, dendroid, between gelatinous or carti- 
laginous and membranous, coated with microscopic hyaline hairs ; structure 
complex ; central axis an articulate filament ; intermediate of branching radia- 
ting moniliform filaments ; cortical membranous, of several series of minute 
coloured cells. Conceptacles immersed in the branchlets, containing tufts of 
moniliform spore-threads, radiating from a central axis. Tetraspores zoned, 
in wart-like thick-walled conceptacles. 
A genus of N. Australian and New Zealand species. 
1. D. insignis, Mont, in Voy. au Pole Sud, 102. t. 8./. 3 ; — FI. N. Z. ii. 
254. Frond rose-purple, 6-8 in. long, very delicate, subtubular, as slender 
as a crowquill, broadly ovate in outline, vaguely decompoundly branched; 
branches spreading, attenuate at both ends. — J. Ag. Sp. Alg. ii. 215. 
Akaroa, 2)’ Urville. 
73. PLOCAMIUM, Lyngbye. 
Frond br glit pink, between membranous and cartilaginous, flat or com- 
