Fig. 175. NITOPHYLLUM UILLIJE. 
Colour. A fine rose-red, which turns to orange in fresh water. 
Substance. Membranaceous and tender, but thickish. Mrs. Griffiths said, ‘‘ resembling soft 
kid-leather.” 
Character of Frond. A flat, ribless expansion ; rising from a short stalk ; of round but 
irregular outline ; more or less deeply slit into oblong, broad, rounded divisions 
{lacinim). Margins smooth and even ; or occasionally slightly waved. Obscure veins 
rising from the base, and sometimes spreading faintly upwards. - - . 
Measur^ement. From 4 to 8 inches long. 
Fructificatioji. Of two kinds. 1. Clustered spores in large globose capsules; immersed in, and 
scattered over, the surface. 2. Tetraspores in extremely minute, dot-like groups 
(soid), scattered over the upper part of the divisions (Jacinioe). 
Habitat. South of England. On the shady sides of deep tidal-pools near low-water mark. 
Bare. 
Fig. 176. NITOPHYLLUM GMELINI. 
Colour. Purplish-red. 
Substance. Membranaceous ; but crisp and somewhat rigid when first gathered. 
Character of Frond. A flat, ribless expansion, rising from a short stalk; of broadly fan- 
shaped or round outline ; more or less deeply slit and divided. Divisions (facinioe) 
broadly wedge-shaped, waved or curled. Margins smooth and even. Obscure veins 
rising from the base and sometimes spreading faintly upwards. 
Measurement. From 2 to 4 inches high, and as wide or wider. In Irish specimens 6 inches. 
Fructification. Of two kinds. 1. Clustered in largish, globose ; scattered over 
the surface. 2. Tetraspores in long, line -like groups (son) along the margins only. 
Habitat. South of England. Plymouth, fine. Ireland. On rocks and large alg£e, near low- 
water mark. 
When fresh, always to he recognised by its crisp, rigid substance. 
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