. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. 187 ramuli, a bi-lobed favella being suspended from a trifid ramulus. Tetra- spores, when present, are attached to the sides of these little ramuli; they are very minute, roundish, and produced in twos or threes, and •sometimes in clusters. The colour of the living plant is a pinky red, turning a pale reddish brown in drying. It is said to be perennial, and is in perfection from July to September. The beautiful and extensive Order Ceramiacece conta
. British marine algae : being a popular account of the seaweeds of Great Britain, their collection and preservation. Marine algae. 187 ramuli, a bi-lobed favella being suspended from a trifid ramulus. Tetra- spores, when present, are attached to the sides of these little ramuli; they are very minute, roundish, and produced in twos or threes, and •sometimes in clusters. The colour of the living plant is a pinky red, turning a pale reddish brown in drying. It is said to be perennial, and is in perfection from July to September. The beautiful and extensive Order Ceramiacece contains many of the most delicate and attractive of the British red seaweeds. The structure, even in the most compound forms of these plants, is exceedingly simple, being for the most part strings of cylindrical cells, more or less branched, the little cells or joints each growing out from the tip of the one below it, the branches being formed by cells arising, or budding,. Fig. 173. (a) Terminal branch of Spyridia Jilamentosa; (b) Portion of the same with bi-lobed favella, magnified. as it were, from the upper sides of the mature or previously formed articulations. In the larger and more compound forms, the stems and some of the principal branches are coated or supplied internally with closely packed longitudinal filaments, which traverse the fronds and render those portions of the plants nearly opaque; but even in these apparently more highly organised structures, a very slight examination will reveal the original articulated filament, which is the charac- teristic structure of most of the species of this interesting tribe of marine algae. The name of this Order is from the Greek for a pitcher, in reference to the form of the fruit, which is much more characteristic of the Ceramidia of the Polysiplionice than of any of the spore-vessels of the Ceramiacece, which are berry-like, but not in any instance pitcher shaped. However,. Please note that these images are extracted from sc
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Keywords: ., bookcentury1800, bookdecade1870, bookpubl, booksubjectmarinealgae
