IX. ALGjE. 
670 
\_Polysiphonia. 
abscissa and microcarpa, FI. Antarct. 479, 480. 1. 182. f. 3 ; Harv. Ner. Austr. 
42, 43; J. Ag. Sp. Alg. 974. 
Cook’s Straits to Stewart’s Island, Lyall ; Akaroa, Raoul. (Tasmania, Fuegia.) 
14. P. variabilis, Harv. inFl.N.Z. ii. 228. Fronds red-brown or purple, 
loosely tufted, flaccid, 2-4 in. high, setaceous, irregularly dichotomous below, 
variously branched above ; branches naked or with multifid branchlets, or ex- 
cessively divided ; branchlets erect ; articulations very variable in length, all 
short, the lower shorter than broad, and middle about twice as long, or all 
very much longer than broad ; tubes 4, broad, spirally twisted. Conceptacles 
broadly ovoid, subsessile. — J. Ag. Sp.Alg. 975. 
Common on the coasts, especially of the Middle Island, on shells, other seaweeds, etc , 
Lyall, etc. 
* 
15. P. mana, Haro, in FI. N. Z. ii. 228. Very similar to the preceding, 
but much smaller, not 1 in. high, covered with ovoid conceptacles. 
Auckland, on Corallines, Lyall. 
16. P. rbododactyla, Harv. in FI. N. Z. ii. 228. Fronds tall, stout, 
8 in. long ; articulate throughout, setaceous below, flaccid above, dielioto- 
mously branched ; branches bright rose-red, forked, with spreading axils ; 
branchlets dichotomously multifid, acute or acuminate, ultimate subsecuud or 
fascicled, with narrow axils ; lower articulations very short, coated with small 
cells ; middle ones as long as broad ; upper of the larger branchlets shorter 
than broad, of the upper extremely short ; tubes 4, broad. 
D’Urville Island, in five fathoms water, Lyall. 
17. P. braebygona, Harv. in FI. N. Z. ii. 228. Fronds tufted, rigid, 
purple, 3-4 in. high, setaceous, divided from the base into alternate de- 
compound branches, which are again divided and taper to slender points, 
secondary and ultimate branches capillary, irregular, alternate, secund or sub- 
dichotomous; axils patent; lower articulations very short, coated with cells; 
middle ones 1^-3 times as long as broad; upper very short ; tubes 4. 
Stewart’s Island, Lyall . — Allied to the P. Griffithsiana of Europe. 
18. P. Brodiaei ?, Greville ; — FI. N. Z. ii. 230. Fronds tall, tufted, 
10-18 in. high, lanceolate. Stem often as thick as a sparrow-quill below, 
simple, forked or alternately branched, or clothed with branchlets, 2 in. long, 
which are fascicled, multifid, pellucid ; articulations 1^ times as long as broad, 
all coated with small cells ; tubes 6-8 ; conceptacles urceolate- ovoid, sessile 
on the branches. — Harv. Phyc. Brit. t. 195 ; J. Ag. Sp. Alg. 993. 
Apparently common from the East coast to Stewart’s Island, Lyall. (N. Atlantic 
Ocean.) 
19. P. Lyalin, Ilook.f. and Harv. FI. N. Z. ii. 230. Frond erect, 4-5 
in. long, brownish-red, darker when dry, elongate, cartilaginous, setaceous, 
inarticulate, simple or divided below, branched throughout its length ; 
branches simple, 4-farious, densely clothed with multifid, short, imbricate, 
dichotomous spreading branchlets — jf in. long, ultimate subulate ; articula- 
tions about as long as broad, visible on the branchlets only, coated with 
