. The Canadian naturalist and geologist. Natural history -- Periodicals. 464 THE CANADIAN NATURALIST. [Dec. in spring coating damp walls and banks, and long mistaken ior species of algae (figs. 1, 2, 3). From various cells of this, young Fig. 1. Spore ot Fun aria hygrometrica. Fig. 2. Spore of Fanaria hygrometrica Fig. 3. Prothallium and young plant. plants are developed, whose fine radicles penetrate the soil; their leaves shoot up, and they become like the parent from which the spore emanated; and being now capable of maintaining an inde- pendent existence, the prothallium, no
. The Canadian naturalist and geologist. Natural history -- Periodicals. 464 THE CANADIAN NATURALIST. [Dec. in spring coating damp walls and banks, and long mistaken ior species of algae (figs. 1, 2, 3). From various cells of this, young Fig. 1. Spore ot Fun aria hygrometrica. Fig. 2. Spore of Fanaria hygrometrica Fig. 3. Prothallium and young plant. plants are developed, whose fine radicles penetrate the soil; their leaves shoot up, and they become like the parent from which the spore emanated; and being now capable of maintaining an inde- pendent existence, the prothallium, no longer needed, dies away, except in a few minute annual mosses of delicate texture, where it is persistent during their whole life. But some mosses rarely produce fruit; yet it is necessary that their reproduction should be ensured, and we find prothallium also developed from tubercles on the roots, from gemmae or buds occurring on the leaves, or even from the cell-tissue of leaves themselves; while in some mosses a portion of the leaves become altered into gemmae, and clustered in a head on the top of a naked stalk called a pseudopo- dium, as in Tetrapliis pellucida and in Aulacomnium (fig. 4). Fig. 4. Pseudopodium of Aulacomnium androgynum, with one of the gemma. The roots.—These are slender fibrils, by which the plants are. 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 Natural History Society of Montreal. Montreal, Dawson
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