690 
IX. ALGA5. 
65. APOPHLCEA, Harvey. 
Frond red-purple, black when dry, spongy, cylindric, densely dichoto- 
mously fastigiate, of 2 strata of cells ; axis of dense, slender, anastomosing 
threads ; cortical of vertical, elongate, dichotomous, articulate threads, im- 
mersed in a soft gelatine. Conceptacles scattered, immersed in the cortical 
threads, enclosing parietal fascicled threads. Tetraspores transversely di- 
vided. 
A curious genus, confined to New Zealaud. 
1. A. Sinclairii, Harv. in FI. N. Z. ii. 244. t. 116 B, Boot a broad 
leathery disk. Fronds 1 in. high, very stout, densely fastigiate; branches 
short, thick, obtuse. — J. Ag. Sp. Alg. ii. 458. 
Common on rocks, Colenso, etc. 
2. A. Lyallii, Hook. f. and Harv. FI. N. Z. ii. 244. t. 166 A. Frond 
5-6 in. high, with a slender stipes thickening upwards, in. diameter, then 
forking repeatedly; branches flexuous, patent, stout; axils rounded; tips 
obtuse. 
Preservation Harbour and Otago, Lyall. 
66. PEYSSOimELLIA, Decaisne. 
Frond dull red or brownish, flat, broad, fan-shaped, rooting by fibrils from 
the lower surface, zoned ; structure of 2 strata, that of the lower surface of 
horizontal cylindric cells, cohering in longitudinal filaments, that of the 
upper surface of similar cells in lines at right angles to the others. Con- 
ceptacles superficial, containing either globular spores in moniliform filaments 
or cruciate tetraspores. 
A scarce genus in the northern seas, where one species exists on the Mediterranean and 
Atlantic coasts ; more common in the south temperate zone. 
1. P. rugosa, Harv. in FI. N. Z. ii. 245. Frond 1-2 in. broad, dark, 
red-brown, attached by the whole lower surface, between membranous and 
coriaceous, orbicular, wrinkled over the whole surface. Fructification un- 
known. 
Cape Kidnapper, on the surface of rocks covered with sand, Colenso. 
67. NEMALION, Duby. 
Frond red or purple, cylindric, gelatinous, elastic, dichotomous ; structure 
of 3 strata ; medullary of long, subsimple, interlaced filaments, which radiate 
outwards, forming the second stratum ; this consists of a layer of anasto- 
mosing, horizontal, fastigiate, dichotomous, moniliform threads, invested in 
gelatine, the tips of which constitute the outermost stratum or periphery. 
Spore-mass spherical, of many clavate radiating spore-threads, immersed in 
the peripheric threads. Tetraspores triangularly divided, in the terminal cells 
of the peripheric filaments. 
Natives of northern and southern temperate zones. 
