702 
IX. ALG/K. 
[ Chondrus . 
repeatedly dichotomous, subchannelled; segments \ in. wide, ascending, 
fiabellately fastigiate, obtuse ; axils rounded. Conceptacles crowded, hemi- 
spheric on both surfaces of the frond. — Nothoqenia , Mont, in Yoy. au Pole Sud, 
109. t. 10. f. 8. 
Lord Auckland's group, D’Urville, Hombron, etc. 
81. EPYMENIA, Kuetzing. 
Frond dull red-purple, caulescent below, expanding into flat forked lamina, 
which is ribbed at the base. Structure of 2 strata; medullary of oblong colour- 
less cells ; cortical of vertical, minute, coloured cells. Conceptacles on proper 
leaflets, seated on the lamina, of thick-wmlled hemispherical tubercles, con- 
taining a mass of spores. Tetraspores cruciate, dispersed amongst the cortical 
cells. 
A southern genus, found in S. Africa and Australia. 
1. E. obtusa, Kuetzing ; — FI. N. Z. ii. 249. Frond 1 foot long, stipi- 
tate, flabellately expanded, repeatedly dichotomous ; principal segments 
cuneate below, costate halfway up ; upper lineai'-cuneate ; uppermost sub- 
palmate, very obtuse ; disk or costa proliferous, with small leaflets | in. 
long. Conceptacles numerous. — J. Ag. Sp. Alg. ii. 220. Phyllophora, Grev. ; 
— FI. Antarct. 187 and 486. 
East coast, Colenso, Lyall. Lord Auckland’s group, J. D. H. (S. Africa, Fuegia.) 
2. E. acuta, Harv. in FI. N. Z. ii. 249. Frond 5-6 in. high, flabelliform, 
cuneate at the base, many-times dichotomous, with a stout costa running up 
every segment to the middle ; segments spreading, broadly linear, subacute. 
Akaroa, Lyall. 
82. CHYLOCLADIA, Greville. 
Frond rose-red, terete or subcompressed, tubular, decompound, nodose- 
articulate or constricted at regular intervals, thus divided into sacs, which are 
full of water, with a few filaments ; walls of angular cells. Conceptacles 
conical, opening by a pore, enclosing cuneate spores, surrounded by a web of 
filaments. Tetraspores 3-partite, immersed in the walls of the frond. 
A northern and southern temperate genus. 
1. C. umbellata, Hook.f. and Harv. FI. N. Z. ii. 253. t. 119 C. Fronds 
dull purple, 1-2 in. long, terete, Jg- in. diameter, trichotomous ; primary 
branches curved and hooked at the summit, emitting on the convex side below 
the apex, 3 or 4 erect, linear-clavate. slightly curved, lesser branches, which 
again throw out still smaller from their tips or are crowned with 3-4 clavate 
or fusiform bodies. 
Port Underwood, Cook’s Straits, Lyall. 
2. C. secun&a, Hook. f. and Harv. Fl.N. Z. ii. 253. Frond rose-red, 
small, 2 in. high, densely tufted, membranous, flaccid ; branches setaceous, 
intricate, generally secund and arched, linear, obtuse, equal ; branchlets few, 
