Plate LXXVI. 
Fig. 357. CALOTHRIX PANNOSA. 
Colour, Dark green. 
Substance, Eigid ; wiry. 
Character of Frond, Long, blunt, very miicb curled and twisted threads (/taewfg) densely 
interwoven into compressed tufts, or a sort of honeycombed layer on rocks. Fila- 
ments tubular ; containing narrow, cylindrical colour-cells, which show through, 
with division-lines. 
Measurement. The filaments J an inch long ; the larger spreading. 
Fructification, Minute seeds {zoospores) formed of the colour-cells in the filaments ; which 
cells then separate from each other and drop out. 
Habitat, Eoundstone Bay. Kilkee. Sidmouth. On rocks or algae near high-water mark. 
Barely observed. 
For other Calothrixes, see Plate LXXVII. 
Fig. 358. LYNGBYA MAJUSCULA. 
Colour, Blackish-green. 
Substance. Crisp ; rigid ; glutinous. 
Character of Frond. Large tufts or bundles of long, very thick, curling, twisted threads 
{filaments) issuing from interwoven layers of the same. Filaments not branched, 
but lying together as if they were ; tubular ; containing very narrow, cylindrical, dull- 
green colour-cells, which show through ; their division-lines obscure. 
Measurement. Filaments 1 or 2 inches long ; the layers indefinitely spreading. 
Fructification, As in Calothrix, &c. 
Habitat. Our coasts generally. On mud or sand-covered rocks at and below half-tide level ; 
also thrown up after storms, Not uncommon. 
By far the largest of British Lyngbyas, and like tufts of curling human hair, were it not 
for the mermaidy colour. 
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