SOME MARINE ALGH FROM NEW ZEALAND. 165 
logical differences in the thallus. P. plumosa is very much closer 
in structure to P. formosissima than P. ails idea 
AMIUM aPiouLAtuM J. Ag.—This species oceurred as an epi- 
phyte on Codium ——— and was kindly identified for me by 
Prof. Schmitz. I have mpared it with the specimens in the 
herbarium of the British Manne (named by Agardh) and found it 
to agree in all respects. In a Epicrisis (p. 105) Agardh indicates 
that the a had not been seen by him. My plants, as 
well as those in the Br itish Museum herbarium, are plentifully 
provided with both ese mae se cystocarpia, the latter being of 
the usual type found in the 
ICROCLADIA COULTERI Wasees : Ahn Ner. Bor. Amer. p. 209.— 
merican species has not, so far as 1 am aware, been recorded 
hitherto from Australian seas. The plants bore tetraspores, cysto- 
carps, and antheridia. The anthe re of which I can find no 
description, are modified from the terminal branchlets, the pol- 
ep 
layer. I fail to see any evidence of Agardh’s —— ( Epic. p. 
110), ** Spherospore mihi sai hie divisee obveneru 
Nemation ramMuLosum Harv.; Harvey in Hook. ‘ Harv. Flora 
of N. Zeal. ii. p. 245.—By Agardh (Epic. p. 508) this spe cies is 
mentioned under ‘ Species inquirende. ” Prof. Parker 
includes a Nemalion, which is undoubtedly N. ramulosum of Harvey, 
oper oed in all respects save that the plant is rather smaller. 
Harvey's plant was not in fruit. That which I possess has very 
cintiagrente cystocarpia tying among ary dichotomous peripheric 
filaments and quite typical for the gen 
PoLyZoniIA CUNEIFOLIA Mont. var. BIFIDA 1; Hook. et Hary.; Harve 
In his Syill. P be also he gi ‘lora 
of New Zealand, Hooker and Harvey describe the present variety, 
giving as its diagnostic characters ‘ foliis 8 
bifidis vel bipartitis, stichidiis ample cristatis.” Kitzing gives a 
figure - the species (Tab. Phyc. 15, vi). The plants collected by 
Mr. n — plentifally supplied _ —— es _ 
santheridin The stichidia do not, as the type form, becom 
‘* pinnately co meedy * but are -sirast ali piniphs or venetian 
double. The attachment discs on P. cuneifolia var. bifida are, so 
far as one can judge by an examination of herbarium specimens of 
disc. More rarely an attachment disc and a ae ch arise from wa 
same articulation. Hach disc is provided with a short stalk compos 
of two singed cells, which are prolongations of two of the 
