Chylocladia.\ 
IX. ALG/E. 
703 
distant. — Chrysimenia , Harv. Ner. Austr. 77. Dumontia pusilla, Mont, in 
Voy. au Pole Sud, 105. t. 13. f. 3. 
Akaroa, Raoul ; Port Cooper, Lyall. (Australia.) 
3. C. ? csespitosa 5 Harv. in FI. N. Z. ii. 253. Fronds small, tufted ; 
stipes arcuate, rooting, giving off erect, oppositely pinnate or whorled, divided 
branches ; branchlets spindle-shaped, opposite or 4-nate, a little constricted 
at the base, attenuated at the apex, acute, the larger curved. 
Port Nicholson, Lyall . — Perhaps an immature state of the Australian C. clavellosa. 
83. CHEYSYMENIA, J. Agardh. 
Frond more or less compressed, tubular, not articulate, full of fluid and 
traversed by a few filaments ; walls of several series of cells ; innermost long 
and distended ; outer smaller ; outermost minute. Conceptacles enclosing a 
dense tuft of spores. Tetraspores 3-parted, immersed in the branchlets. 
A small genus, common to both temperate zones. 
1. C. ? polydactyla. Hook./, and Harv. FI. N. Z. ii. 253. t. 119 A. 
Frond filiform, solid, firmly membranous, 3-4 in. long, twice as thick as a 
hog’s bristle, excessively subdichotomously branched, dark red-purple ; larger 
branches flexuous; smaller straight, twiggy, alternate or secund, all densely 
clothed with alternate, secund or fascicled, fusiform, hollow branchlets, which 
are attenuate at both ends. Fructification unknown. 
Stewart’s Islands, Lyall. — A curious and pretty little plane of doubtful affinity. 
84. HALYMENIA, J. Agardh. 
Frond bright or dark red, terete, compressed or flat, between membranous 
and gelatinous, dichotomous or pinnatifid; structure of 2 strata; medullary 
of few, lax, branched filaments in gelatine ; cortical membranous, of minute 
coloured cellules. Spore-masses immersed in the medullary stratum. Tetra- 
spores cruciate, scattered amongst the cortical cells. 
Beautiful seeweeds, natives of both temperate zones. 
1. E£. iatissima, HooJc.f. and Harv. FI. Antarct. t. 73. f. 1. Frond 
bright red, tender, between gelatinous and membranous, 2-14 in. long, 4-6 
broad, cuneate at the base, broadly oblong- or ovate-lanceolate, simple or 2- 
fid, or margin laciniate-pinnatifid ; segments ovate-lanceolate. Spore-masses 
extremely numerous, scattered over the whole frond, very slightly prominent. 
— J. Ag. Sp. Alg. ii. 204. 
Lord Auckland’s group and Campbell’s Island : on rocks, J. I). H. 
2. H. novse-Zelandise, Mont, in Voy. au Foie Sud, 107. t. 12./. 2; 
- — FI. N. Z. ii. 253. Frond rose-purple, flat, between fleshy and membra- 
nous, rigid when dry, spirally convolute, dichotomously pinnate; pinnae nar- 
rowed at the base, spreading, subterete, lanceolate, acute, quite entire, again 
pinnulate. — J. Ag. Sp. Alg. ii. 207. H. Urvilleana, Mont. 1. c. t. 12, et 
Phyc. Antarct. 8. 
