Plate XXXVIII. 
Figs. 173 & 174. NITOPHYLLUM PUNCTATUM. 
Colour^ Bright pink. 
Substance, Delicately membranaceous. 
Character of Frond. A thin, flat, ribless expansion ; unstalked {sessile) ; irregular in outline, 
but always inclined to wedge-shape ; variously slit and divided. Bometimes nearly 
simple, with a few forked {dichotomous) divisions {lacinice) above ; or fringing the 
margins also. Sometimes narrow, and repeatedly forked from the base. (See Fig. 
174 ; upper form.) Glossy when dried. Unmarked by veiny lines. 
Measurement. From 4 to 12 inches long, and about as broad. At Cushendall, N. Ireland, 
5 feet long by 3 wide I 
Fructification. Of two kinds. 1. Clustered spores in small, globose, capsules; immersed in, 
and thickly scattered over, the surface. 2. Tetraspores in large more or less oval 
groups (son*), scattered, or confined to a central portion. 
Habitat. Several stations on our coasts. West of Scotland. Finest in Ireland. Attached 
to algae in pools at low-water mark, and in deeper water. 
Dr. Harvey has here collected under one name several plants which have been accounted 
species, but which he has satisfied himself agree in certain important distinctive characters. 
Amateurs may he guided hy the bright, light, pink colour, extremely thin substance, glossiness 
when dry, and entire absence of veiny lines, to a recognition of this plant under its many 
forms. 
