. Fossil plants : for students of botany and geology . Paleobotany. Fig. Pityoxylon ttiggenst; c, resin-canal in a fusiform medullary ray. (British Museum, 51427, 51641, 51727.) broad; the reduction in diameter of the summer-tracheids extends over several rows, the transition being much more gradual than in some types of Coniferous wood. A characteristic feature is the occurrence of more or less circular patches where the tracheids have been destroyed with the exception of a single tracheid or a Kraus in Sclumpor (72) A. p. 378. .Schimper and Schenlv (90) A. pp. 855, 874. Schroeter (80)
. Fossil plants : for students of botany and geology . Paleobotany. Fig. Pityoxylon ttiggenst; c, resin-canal in a fusiform medullary ray. (British Museum, 51427, 51641, 51727.) broad; the reduction in diameter of the summer-tracheids extends over several rows, the transition being much more gradual than in some types of Coniferous wood. A characteristic feature is the occurrence of more or less circular patches where the tracheids have been destroyed with the exception of a single tracheid or a Kraus in Sclumpor (72) A. p. 378. .Schimper and Schenlv (90) A. pp. 855, 874. Schroeter (80) p. 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 Seward, A. C. (Albert Charles), 1863-1941. Cambridge : University Press
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishercambr, bookyear1898
