Century Dictionary and Cyclopedia
- n. A moss-like plant, Harrimanella hypnoides, of the heath family, found on alpine summits in New England and New York, and northward throughout the arctic regions of both hemispheres.
“Not only does a moss-plant never arise directly from the spore, but in all cases of vegetative reproduction, apart from the separation of branches by decay of older regions of the plant, a protonema is found.”
“The indications of a serial progression are not so clear in the mosses, but the majority of the forms may be regarded as forming a great phylogenetic group in the evolution of which the elaboration of the moss-plant has proceeded until the protonema appears as a mere preliminary stage to the formation of the plants.”
“The formation of the moss-plant on the protonema is always from a single cell and is similar in all mosses.”
“B, Part of a developed protonema. h, Creeping filament with brown walls from which the filaments of chlorophyll-containing cells (b) arise; k, young moss-plant; w, its first rhizoid.]”
“The foot of the sporogonium has penetrated into the underlying tissue of the stem of the moss-plant.]”
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