Plate XLI, 
Fig. 187. RHODYMENIA CILIATA. 
Colour. A deepj full, more or less bright red ; becoming darker in drying. 
Substance. Thick ; firm ; elastic ; quite crisp when fresh. 
Character of Frond. A flat, ribless, leafy expansion ; rising from a very short stalk ; more or 
less broadly lanceolate, or once forked. Margins toothed ; or fringed with small, 
hair-like frondlets, some of which expand into leafy, lanceolate, or once-forked 
formations like the first ; while in others, both on the margin and surface, the 
capsular fruit is formed. Root fibrous. Fruiting in winter. 
. Measurement. From 2 to 8 inches long ; width of leaves varying from l to 1 J inches ! 
Fructification. Of two kinds. 1 . A mass of spores in globose capsules, formed in the hair- 
like frondlets. 2. Tetraspores forming cloud-like patches ; dispersed over the 
surface. 
Habitat. Our shores generally, except the extreme north-east. At Bridlington, but not at 
Filey. On rocks, &c. near low-water mark, and beyond. Frequent. 
Now Calliblepharis ciliata. The tips of the hair-like frondlets in which the capsules form 
are turned aside by the swelling, and project sideways, like the hill of a bird. (See figure.) 
Fig. 188. RHODYMENIA JUBATA. 
Colour. A dull purplish, or pinkish-red. 
Substance. Thick ; soft ; elastic ; limp. 
Character of Frond. A flat, ribless, leafy expansion ; rising from a cylindrical stem ; narrow- 
lanceolate ; tapering to the base ; branched w'ith leafy formations of the same 
character ; or sometimes with thread-shaped, fibre-like tendrils which spi’ing both 
from the surface and margins ; fringed (like R. ciliata) with lesser hair-like frondlets, 
in which the fruit of both kinds is produced. Root fibrous. Fruiting in summer. 
Measurement. From 1 to 8 inches long. Width varying almost incredibly. 
Fructification. Of two kinds. 1. A mass of spores in hemi -spherical capsides, seated (^sessile) 
on the fringing frondlets 2., Tetraspores immersed in the same. 
Habitat. South and west coasts. On the bottoms of tide-pools between tide-marks ; chiefly 
near low-water mark or among the roots of L. digitata. Frequent. 
So various in width and size that it is very difficult to describe. Sometimes “ filiform and 
entangled,” and resembling Gigartina acicularis. 
81 
M 
