. Introduction to botany. Botany. MOSSES, LIVERWOKTS, AND FERNS 263 Its cells contain chloroplasts and can manufacture their own food. Since tliis filament precedes the leafy moss plant, it is called theprotonema, which means "first thi'ead" (fig. 203, A).. Fig. 203. The life cycle of a moss plant A, brandling protonema, magnified 50 diameters. B and 6, protonema producing buds (1,2, and 3), rhizoids (rh), and underground branches (u); magnified 40 diame- ters. 0, adult leafy plants (), upon which are the sporophytes (.s) with their cap- sules (caps), in which spores are borne, th
. Introduction to botany. Botany. MOSSES, LIVERWOKTS, AND FERNS 263 Its cells contain chloroplasts and can manufacture their own food. Since tliis filament precedes the leafy moss plant, it is called theprotonema, which means "first thi'ead" (fig. 203, A).. Fig. 203. The life cycle of a moss plant A, brandling protonema, magnified 50 diameters. B and 6, protonema producing buds (1,2, and 3), rhizoids (rh), and underground branches (u); magnified 40 diame- ters. 0, adult leafy plants (), upon which are the sporophytes (.s) with their cap- sules (caps), in which spores are borne, the capsule tip being covered by the hood, or calyptra (cal); natural size. D and E, enlarged capsules with the mouth, or peristome (p), from which the teeth (t) extend ; magnified 2.) diameters. All are the moss Atrichum undulutum except D, which is Fissidens adiantoides. A and B from Bonnier and Sablon; C, D, and E from Braithwaite. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York, [etc. ] Ginn and company
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