from The 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.
Sorry, no etymologies found.
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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