542 ALGÆ NOVÆ ZELANDLE. 
Has. Bay of Islands, near high water mark, parasitical : 
on Bostrychia mixta, Gelidium corneum var. crinale, and 3 
Apophlea Sinclairi. | : 
The New Zealand specimens are of much smaller size 
than those from Cayenne, and the cellules composing the 
frond are somewhat differently shaped, whence we had at … 
first considered that they might be regarded as a distinct 
species, having nearly the relation to the first that D. 
ruscifolia has to D. Hypoglossum. But a form, seemingly 
intermediate, found by Professor Bailly at New York, and 
communicated to us by M. Montagne, induces us to agree — 
with this acute observer in regarding our plant as identical | 
with the American species. Mr. Harvey is hardly satisfied 
with the position of this plant in Delesseria, and at one time 
proposed the MS. name Caloglossa for it, but he now fears 
that there are not sufficient data on which to found a 
genus. 
74. *Plocamium Corallorhiza, nobis; Thamnophora Coral- 
lorhiza, Ag. Fucus Corallorhiza, Turn. t. 96. and F. 
cirrhosus, ib. t. 63. 
Has. Dusky Bay, Forster. | 
The variety cirrhosa only has been found at New Zealand, 
and it may possibly prove distinct from the Cape of Good 
Hope plant. No character can, however, be derived from 
the cirrhose prolongations of the branches, which frequently 
occur in P. Cunninghamii and in other species. 3 
75. Plocamium procerum, nobis. Thamnophora procera, J. ` 1 
Ag. in Linn. XV. 10. | AT 
Has. New Zealand, Lyall. : 
16. Plocamium Cunninghamii, nobis; fronde angusta tenui 
nervo obsoleto percursa flabellatim ramosissima subfas- 
tigiata, ramis ramulisque alterne geminis decompositis, 
ramulis erecto-patentibus anguste triangularibus acumi- 
natis ad marginem exteriorem (sæpissime) argute serratis, 
axillis rotundis. Thamnophora Cunninghamii, Grev. in 
Hook. Comp. Bot. Mag. 2. p. 329. 5 
