. Botany for high schools and colleges. Botany. nio. 74. Fig. 75. Fig. 74. —Pitted vessels of AHstolochia sip'io, from a longitudinal section of the stem ; tiie vessel on ihe liglit is seen in section, tliat on thi' left from without; , rings, whicii are remnants of tlie original transverse partitions ; 6, 6, sections of tiie walls \ between the vessels are parenchyma-cells, highly magnified.—After Duchartre. Fig. 75.—Tracheldes of Cij/uus laburnum, from a longitudinal tangential section of the stem; m, m, a cross-section of a medullary ray : in ihree of the cells the pitted partitions are
. Botany for high schools and colleges. Botany. nio. 74. Fig. 75. Fig. 74. —Pitted vessels of AHstolochia sip'io, from a longitudinal section of the stem ; tiie vessel on ihe liglit is seen in section, tliat on thi' left from without; , rings, whicii are remnants of tlie original transverse partitions ; 6, 6, sections of tiie walls \ between the vessels are parenchyma-cells, highly magnified.—After Duchartre. Fig. 75.—Tracheldes of Cij/uus laburnum, from a longitudinal tangential section of the stem; m, m, a cross-section of a medullary ray : in ihree of the cells the pitted partitions are seen ; the medullnry ray is sm-roundea by tracheldes, which are spi- rally marked and sparingly pitted ; at a, two tracheides have fused by the breaking of the wall ; s, e, slightly modified cainbmm-cells. X 375.—After De Bary. forated horizontal or inclined septa (Fig. 74); in other forms they have fusiform extremities. (4.) Tracheldes. These consist for the most part of single closed cells, or of elements which closely resemble cells;. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : H. Holt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1888
