. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. 36 BRITISH MARINE ALG/E. of the tubercled receptacle which contains the spores, and is itself com- posed of very compact cellular tissue. Professor Agardh includes this species with some others in a group which he calls Fucodium, but at present I have thought proper to describe it under its generally known name. The genus Cystoseira contains some species which are tolerably abundant, at least on the southern coasts of Britain. The generic name of this group indica
. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. 36 BRITISH MARINE ALG/E. of the tubercled receptacle which contains the spores, and is itself com- posed of very compact cellular tissue. Professor Agardh includes this species with some others in a group which he calls Fucodium, but at present I have thought proper to describe it under its generally known name. The genus Cystoseira contains some species which are tolerably abundant, at least on the southern coasts of Britain. The generic name of this group indicates a chain of cysts or bladders, of which the branches of all these plants are chiefly composed. The roots of all are thick and woody, the stems are short and cylindrical, and are beset on all sides by numerous slender branches variously divided and clothed throughout with little spine-like ramuli. In our illustra- tion of the species, C. ericoides (Fig. 40), which is very heath-like (whence its specific name), the air-vessels are very small and are pro- duced near the tips of the branches. The receptacles are also terminal and spiny. The fronds are from 1ft. to 2ft. high, and when seen growing in shallow pools with the sun shining full upon it, the whole plant is beautifully iridescent. Young collectors who see this brilliant alga for the first time, are naturally enchanted with the exquisite glaucous tints which it reflects, but their delight is quickly dispelled, for upon removal from the water, it is found to be of a dull brown olive, all the full rich tints of blue and green, more like the phosphorescent gleams that flash from some of the marine animals than any vegetable colours, vanish the moment the plant is removed from its native element. C. fibrosa,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
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Keywords: ., bookcentury1800, bookdecade1870, bookpubl, booksubjectmarinealgae
