Rhodymenia.~\ 
IX. ALGvE. 
693 
East coast, Colenso ; Otago, Lyall. Lord Auckland’s group and Campbell’s 
Island, Turnbull, J. D. E. 
6. R. corallina, Grev. ; — FI. N. Z. ii. 248. Frond bright red or purplish, 
a foot long, broader than long, flabellately decompound, with a terete stipes, 
cuneate at the base; segments linear, in. broad, linear or subcuneate; 
axils rounded. Conceptacles crowded on the disk of the penultimate seg- 
ments. Tetraspores in sori towards the tips of the fronds.-~-J. Ag. Sp. Alg. 
ii. 379. Spluerococcus, Bory, Voy. Coquille, t. 16. 
East coast and Cook’s Straits, Lyall. Lord Auckland’s group, Eornbron. (Tasma- 
nia, Kerguelen’s Land, Chili.) 
7. R. dichotoma, Hook.f. and Harv. FI. Antarct. i. 186. t. 72. /. 1 ; 
FI. N. Z. ii. 248. Frond rose-red, membranous, very broad from a cuneate 
base ; axils rounded ; segments spreading, linear or cuneate, obtuse, at length 
emarginate or 2-fid. — Callophyllis, Kuetzing. 
Queen Charlotte’s Sound, Lyall ; Campbell’s Island, J. I). H. 
Section dotibtful. 
8. R. epimenioides, Harv. in FI. N. Z. ii. 248. Frond rose-red, de- 
licately membranous, many times dichotomous, flabellifonn, narrowed at the 
base into a short cartilaginous stipes, which is produced into the frond as a 
short costa ; segments linear or cuneate, very obtuse, \ in. wide ; axils 
rounded or subacute. Fructification unknown. 
Otago Harbour, Lyall, Lindsay. — Very similar to R. dicliotoma , hut the cells of the me- 
dullary stratum are larger, thin-walled, and rapidly expand when moistened ; it also resembles 
Epymenia obtusa, but has a totally different structure. 
71. RHODOPHYLLIS, Kuetzing. 
Frond rose-red, flat, membranous, dichotomously or pinnately decompound, 
usually margined by slender leafy processes ; structure of 2 strata ; medullary 
of large, colourless, roundish angular cells ; cortical of one or few series of 
coloured minute cells. Conceptacles marginal, external, containing a com- 
pound nucleus of radiating bundles of spore-threads, enclosed in a membrane. 
Tetraspores zoned, immersed in the cortical cells of the frond on its marginal 
processes. 
A small genus, native of both temperate zones. 
1. R. bifida, Kuetzing. Frond bright red or purplish, delicately mem- 
branous, decompound, subflabellate, 1-2 in. long ; segments fastigiate, linear 
or cuneate, A - \ in. broad, terminal, obtuse ; margins entire, often set with 
crowded confluent leafy cilia. Conceptacles marginal or scattered over the 
terminal lobes. Tetraspores in clouded sori. — J. Ag. Sp. Alg. ii. 888. 
Lord Auckland’s group, E Urville. (Atlantic, Mediterranean and Pacific Oceans.) 
— I have seen no southern specimens. 
2. R. Gunnii, Harv. in FI. N. Z. ii. 247. Frond decompoundly pinna- 
tifid, rose-red, delicately membranous, 8-12 in. long; segments alternate or 
subopposite, sub-2-pinnatifid, close set ; ultimate toothed ; tips obtuse ; axils 
