. A textbook of botany for colleges and universities ... Botany. LEAVES 637 which in Cystopteris drop oflf and germinate in the ground. In Asplenium they may germinate and grow to considerable size while attached to the leaf (fig. 932), later falling to the ground where development is continued. When the leaf tip of the walking fern {Camptosorus) comes in contact with the ground, a bud forms from the terminal cells, later developing into a plant. In Adiantum Edgeworthii the apical cell of a leaf may develop directly into a stem. In Camptosorus some ex- ternal factor (perhaps moisture) Stimulat
. A textbook of botany for colleges and universities ... Botany. LEAVES 637 which in Cystopteris drop oflf and germinate in the ground. In Asplenium they may germinate and grow to considerable size while attached to the leaf (fig. 932), later falling to the ground where development is continued. When the leaf tip of the walking fern {Camptosorus) comes in contact with the ground, a bud forms from the terminal cells, later developing into a plant. In Adiantum Edgeworthii the apical cell of a leaf may develop directly into a stem. In Camptosorus some ex- ternal factor (perhaps moisture) Stimulates vegetative reproduction, but the stimu-. FiG. 933.—The upper portion of a plant of Bryophyl- lum calycimimt showing new plants {p) developing from buds that originate in the leaf sinuses; note also the adventi- tious roots (r) which develop at the stem nodes, appearing from all sides where the stem is vertical or ascending, but from the under side only where the stem is 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 Coulter, John Merle, 1851-1928; Barnes, Charles Reid, 1858-1910, joint author; Cowles, Henry Chandler, 1869- joint author. New York, Cincinnati [etc] American book company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
