Fig. 300. CLADOPHORA L^TEVIRENS. 
Colour. A pale transparent yellow-green ; greyish and without gloss when dry. 
Substance. Soft ; more or less adhering to paper. 
Character of Frond. Dense tufts of jointed threads {filaments)^ very much branched ; bushy. 
Filaments scarcely as thick as horse-hair ; closely set with numerous, straight, but 
spreading, opposite, or irregularly-set branches, which are repeatedly re-branched. 
Branches often crowded with re-branched branchlets ; the last set of which are 
secund and spreading ; tips blunt. 
Joints. Those of the principal branches long ; of the branchlets about twice as long as broad ; 
filled with light-green colouring matter {endochrome'). 
Measurement. From 4 to 8 inches long. 
Fructification. Minute seeds {zoospores) formed of the colouring matter in the joints ; and in 
due time bursting through them. 
Habitat. Our coasts generally. On rocks, &c. in tide-pools. Very common. 
In habit of growth very like C. glomerata^ which is common in fresh -water streams, and 
sometimes grows to a greater length than the marine plant. They are supposed by botanists 
to he the same species under different circumstances of existence. 
Fig. 301. CLADOPHORA FLEXUOSA. 
Colour. A rather dull green ; often half-opaque. 
Substance. Somewhat rigid and harsh to the touch, but more or less adhering to paper. 
Character of Frond. Loose tufts of jointed threads {filaments)^ very much branched. Fila- 
ments very wavy, or angularly bent ; clothed more or less closely throughout, with 
wavy branches of very unequal lengths, alternately or irregularly set. Branches 
several times divided and re-branched ; the last divisions long, spreading, curved, 
set with delicately slender branchlets, arranged secw?ic?-wise, like the teeth of a 
comb, first on one side, then on the other, of the stems ; their tips very fine. 
Joints. Those of the branches three or four times as long as broad ; those of the branchlets 
twice ; filled with green colouring matter {endochrome). 
Measurement. From 4 to 8 inches long. 
Fructification. Minute seeds formed of the colouring matter in the joints, and in 
due time bursting through them. 
Habitat. Yarmouth. Torquay. Ballycastle. Clontarf, &c. In rock-pools between tide- 
marks, and in salt-water ditches near Yarmouth. Not uncommon. 
In specimens from Clontarf the extreme slenderness of the secund branchlets forms quite 
a mark of distinction. 
128 
