584 ALGÆ NOVÆ ZELANDIÆ. 
elongato cartilagineo filiformi crassiuseulo inarticulato pin- 
natim bipinnatimve ramoso, ramis simplicibus densissime 
ramulis velatis, ramulis brevissimis obsolete articulatis 
striatis dichotome multifidis quadrifariis patentibus. 
Has.: East Coast, Colenso. 
Frond 6-8 inches long, as thick as pack-thread, branched 
with greater or less regularity in an alternate pinnate manner, 
the branches often again producing a set similar to them- 
selves.. The lower part of the stem and the bases of the 
larger branches are naked and smooth, while all their upper 
portions:and the branches are densely covered with short 
ramuli, which give the plant the habit of Cladostephus 
spongiosus. Ramuli a line long, rigid, horizontally patent, 
irregularly dichotomous with patent axils, fastigiate, the 
apices acute, imperfectly jointed, the dissepiments opake. 
Joints as long as broad, with few striæ, Colour when dry in- 
tense black. Ceramidia (on Mrs. Mallard’s specimens) ovate- 
urceolate, with a slender protruding mouth, sessile on the 
ramuli, which are then thicker and less divided than usual. 
Tetraspores immersed in the scarcely distorted uppermost 
divisions of the ramuli, in a single row.—The habit of this 
species is very similar to that of R. Larix and R. floccosa. 
There is also a resemblance to Polysiphonia glomerata, but 
the structure is different. 
49. Rhodomela? spinella, nobis; pusilla, cartilaginea, rigida, 
densissime cæspitosa, intricata, vage ramosa; ramis elonga- E 
tis patentissimis divaricatisve simplicibus furcatisve, ramu- - 
lis: spinzeformibus: subulatis acutis horizontalibus undique _ 
emissis, tetrasporis i in ramorum €! peripheria. nidu- 4 
lantibus sparsis. aa 
found by Mrs. Mallard at Port Philip, on the same occasion that she à 
gathered the wonderful Thuretia quercifolia in such unexampled perfection. _ 
Mrs. Mallard's specimens are larger and more branching than Mr. 
.. Colenso's, and not so coarse in the stem or so shaggy in the ramuli, but — . 
we cannot find a good specific character to separate the Port Philip from — 
the New Zealand plant, and the discrepancies in question are probably 
owing to climate, or to local IHR mena e. as Sed of exposure : zd 
= to rough water, &c.—W: H, H. : 
Pan EE 
