680 ix. algje. [ Corallina . 
whorled species ; upper cuneate, uppermost terete, slender, obtuse, often ca- 
pitate. — Harv. Ner. Austr. 100. t. 40 ; J. Ag. Sp. Alg. ii. 566. 
East coast, Colenso. 
2. C. officinalis, Linn. ; — FI. N. Z. ii. 237. Frond pink, pinnate or 
2-pinnate ; lower articulations cylindric, twice as long as broad, upper ob- 
conic, compressed. — Harv. Ner. Austr. 104; Pliyc. Brit. t. 222 ; J. Ag. Sp. 
Alg. ii. 562. 
Auckland, Lyall ; East coast, Colenso. (Common in all seas.) 
51. JANIA, Lamouroux. 
Frond pale pink, subterete, filiform, articulated, dichotomously and flabel- 
lately branched; articulations coated with calcareous matter, cylindric or 
compressed. Conceptacles urn-shaped, in the forks of the upper branches, 
2-4-horned, with a terminal pore, containing a tuft of at length transversely 
4-parted spore-threads. 
A common genus in both the temperate and tropical zones. 
§ 1. Frond pinn at ely compound. 
1. J. Cuvieri, Becaisne ; — FI. N. Z. ii. 237. Prond 2-4 in. long, plu- 
mose, pinnately compound ; pinnae and pinnules slender, close-set pinnules 
simple or forked ; articulations of the branches 1^-2 times as long as broad, 
broadly obcuneate with prominent angles of the branchlets linear, 2-3 times 
as long as broad. Conceptacles terminal, urceolate, with slender processes. 
— Harv. Ner. Austr. 105. Corallina, J. Ag. Sp. Alg. ii. 572. 
Common on the coasts, Colenso , etc. (Australia, Tasmania, S. Africa.) 
2. J. Hombronii, Mont. ; — FI. Antarct. 184. Prond excessively 3- 
pinnately branched ; pinnae crowded, flabellate ; lower articulations terete, 
upper obcuneate, truncate, as broad as long, compressed, of the branches terete, 
filiform, 2-3 times as long as broad, or ovate-globose, and bearing concep- 
tacles. — Mont, in Voy. au Pole Sud, 146; Harv. Ner. Austr. 105. Coral- 
lina, J. Ag. Sp. Alg. ii. 574. 
Lord Auckland’s group, Hombron, J. J). IT. 
3. J. pistillaris, Mont. ; — FI. N. Z. ii. 237. Prond tufted, laxly 2- 
pinnate ; pinnae and pinnules remote, erecto-patent ; lower articulations 
compressed, oblong-quadrate, dilated above, twice as long as broad, of the 
pinnules terete, discoid, or thickened at the tip and bearing tetraspores. — 
Mont, in Yoy. au Pole Sud, 147 ; Harv. Ner. Austr. 105. Corallina, J. Ag. 
Sp. Alg. ii. 5 74. 
Bay of Islands, in holes of rocks, Hombron . — Description from Montagne. 
§ 2. Frond dichotomous, often fasiigiate. 
4. J. micrarthrodia, Lamour.; — FI. N. Z. ii. 237. Frond 1|— 2 in. 
high, tufted, slender, laxly dichotomously branched ; axils patent ; branches 
subarcuate ; articulations all about the same proportionate length to breadth, 
as long or twice as long as broad, those of the stems cylindric, of the branches 
