712 
IX. ALG/E. 
[ Callithammon . 
2-3 in. long, tender, excessively branched, inextricable; stem and branches 
decompoundly pinnate ; upper divisions pinnate ; pinnules subulate, acute ; 
primary articulations pellucid, veined, 8— LO times, of the branchlets 3-4 
times longer than broad ; lower only coated with small cells. Tetraspores 
solitary, lateral. 
Tauranga, Davies. 
10. C. brachygonum, Harv. in FI. N. Z. ii. 259. Frond flaccid, capil- 
lary, carmine-red, densely tufted, 1-2 in high. Stem subsimple, set on all 
sides with virgate branches, which again branch and bear distichous, dense, 
plumose pinnae ; plumules narrow, erecto-patent ; lower pinnate ; upper longer 
and more compound ; middle one long and 2-pinnate ; articulations short, 
thick-walled ; lowest sparingly coated with cells. Tetraspores globose, in 
series on the inner faces of the branchlets. 
Blind Bay, Lyall ; Tauranga, Davies. 
11. C. byssoideum, Arnott ; — FI. N. Z. ii. 260. Frond flaccid, gelati- 
nous, capillary, much divided into inextricable branched filaments, or with 
a few stems thicker than the rest ; branches linear-lanceolate, set with long, 
slender, fiexuous, pinnate plumules ; articulations pellucid, of the stouter 
stems veined, 8 times as long as broad, of the branchlets 4 times. Tetra- 
spores elliptic, subsolitary near the bases of the branchlets. — Harv. Phyc. 
Brit. t. 262 ; J. Ag. Sp. Alg. ii. 40. Fklebothammia, Kuetzing. 
Foveaux Straits and Otago Harbour, Lyall ; Maketu, Chapman. (N. Australia.) 
Internodes coated, with small cells. 
12. C. Colensoi, Hai-v. in FI. N. Z. ii. 259. Frond dark purple, robust, 
dendroid, 2-3 in. high ; main stem as thick as a sparrow’s quill below, late- 
rally branched ; branches densely clothed all round with minute, compound, 
squarrose, imbricate branchlets ; ultimate divaricate, subulate, acute, alter- 
nate; articulations coated with small cells, 1£ times longer than broad ; ulti- 
mate pellucid. 
East coast and Hawke’s Bay, Colenso. 
13. C. consanguineum, Harv. in FI. N. Z. ii. 259. Frond densely 
tufted, flaccid, rose-purple, 2-3 in. high, capillary, excessively branched ; 
branches spreading, the smaller distichous upwards, alternately decompoundly 
pinnate and alternately plumulate ; plumules short, flabellate, naked below, 
pinnate above, terminal ; pinnae close-set ; articulations opaque, with cortical 
cells, 2-3 times as long as broad; upper pellucid. Tetraspores lateral, sub- 
solitary, triangularly divided. 
Port Njcholson, Lyall. 
SUBORDER III. CHLOROSPERMEiE. 
97. CAULERPA, Lamouroux. 
Rhizome prostrate, creeping, throwing up erect green branches (fronds) of 
horny-membranous texture. Structure continuously tubular, filled with, a 
