. A textbook of botany for colleges and universities ... Botany. Figs. 979, 980. — Rhizomes of the cord grass {Sparivm cynosuroides): 979, the basal portion of a shoot, as seen in summer, showing the origination of new rhizomes (r), which are completely ensheathed by overlapping scale leaves {s); 980, a similar shoot, as seen early in the following spring; note the sharp change in the growth direction of the rhizomes (r') from progeotropic to apogeotropic. protection from transpiration and from cold. In Circaea and in Sola- rium tuberosum, the rhizome develops into an erect shoot, when the aer
. A textbook of botany for colleges and universities ... Botany. Figs. 979, 980. — Rhizomes of the cord grass {Sparivm cynosuroides): 979, the basal portion of a shoot, as seen in summer, showing the origination of new rhizomes (r), which are completely ensheathed by overlapping scale leaves {s); 980, a similar shoot, as seen early in the following spring; note the sharp change in the growth direction of the rhizomes (r') from progeotropic to apogeotropic. protection from transpiration and from cold. In Circaea and in Sola- rium tuberosum, the rhizome develops into an erect shoot, when the aerial stem is removed. This experiment appears to show that such rhizomes are apogeotropic organs whose customary horizontality is due to the inhibition of verticality by the erect stem, much as the growth direc- tions of lateral stems and roots are due to the inhibition of verticality by the primary organs. Linear and radial migration. — In the simplest rhizomes, branching is comparatively slight, and each season there is a new growth of several. 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
