. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. RIIODOSl' 117 a similar structure to the fibres which are found on the tips of many of the Polysiphoniai, but while in that genus these fibres are nearly always colourless, and perish as the plants advance towards maturity, and are not in any way connected with the fructification of the plants, in the Dasyce they are brilliantly coloured, and are as enduring as the plants themselves ; the stichidia, or vessels which bear the tetraspores, being a transformat
. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. RIIODOSl' 117 a similar structure to the fibres which are found on the tips of many of the Polysiphoniai, but while in that genus these fibres are nearly always colourless, and perish as the plants advance towards maturity, and are not in any way connected with the fructification of the plants, in the Dasyce they are brilliantly coloured, and are as enduring as the plants themselves ; the stichidia, or vessels which bear the tetraspores, being a transformation of portions of these tufted ramuli. The ceramidium, or spore-vessel, is also a metamorphosis of some of these ramuH, and is an interesting and beautiful object for the microscope, a number of crimson pear-shaped spores being distinctly visible through the semi-transparent walls of the. Fig. 108. Dasya Coccinea. fruit-vessel. The stichidia are oblong lanceolate pods, suddenly pointed at the tips, and contain the tetraspores, which are arranged in a series of transverse bands. D. coccinea is a summer annual. Small stunted forms are met with growing in pools between tide marks, but luxuriant specimens are only obtainable in sheltered situations at extreme low-water mark, though occasionally they are cast ashore from deep water. The most favourable situations for this species, known to me, are the bays around Bovisand near Plymouth, and the shores west of Ventnor, in the Isle of Wight. D. ocellata, so named from a fancied resemblance which the tips. 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 Grattann, W. H. London : The "Bazaar" Office
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Keywords: ., bookcentury1800, bookdecade1870, bookpubl, booksubjectmarinealgae
