. An introduction to the study of seaweeds. Algae. CHLOROPHYCE^ 123 The Thallus.—There is hardly any type of habit assumed by the higher terrestrial plants that does not find itself represented in this singular genus. There are species named from their resemblance to mosses, club-mosses, cacti, yews, etc., etc., while others are of extremely simple form. This differentiation is not con- fined to the green assimilating shoot, but extends to the root- system with its creeping rhi- zome-like extensions. The plants frequently attain con- siderable stature, and are in most cases of remarkable beaut
. An introduction to the study of seaweeds. Algae. CHLOROPHYCE^ 123 The Thallus.—There is hardly any type of habit assumed by the higher terrestrial plants that does not find itself represented in this singular genus. There are species named from their resemblance to mosses, club-mosses, cacti, yews, etc., etc., while others are of extremely simple form. This differentiation is not con- fined to the green assimilating shoot, but extends to the root- system with its creeping rhi- zome-like extensions. The plants frequently attain con- siderable stature, and are in most cases of remarkable beauty. It has been said ^ that " Nature appears to have executed in the forms of this genus a tour de force, in ex- hibiting the possibilities of the siphoneous thallus — in showing that it is possible for a unicellular organism to dis- play the varied beauties of outward form characteristic of I'll • 1 J , , Fig. 31.—Caulerpa cactoidrs highly-organised types ; to at- „ar. gmdUs one-third natural tain by means of a lattice- ''""^' work of crossbeams within the cell-body that mechan- ical support effected by transverse septa and separ- ate, differentiated cellular structures for other Algse, and for the higher ; 1 Trans. Lmn. Soc. Bot., 2 ser., vol. iii., part 4., p. 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 Murray, George Robert Milne, 1858-1911. London, New York, Macmillan
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