. Contributions from the Hull Botanical Laboratory. Plants. ;6o B0TAS1CAL GAZETTE XOVEMBEK of elongated cells similar to those of the younger condition of the strobilus. Occasionally the xylem extends a short distance into the stalk of the sporophyll, the bundle here, however, usually consisting. V Figs. 13-22.—Cross-sections of mature strobilus at approximately levels indicated by numbers to left of strobilus shown in fig. 9; branches of bundles to various sporo- phylls indicated by a, b, c, etc., xylem indicated by black; bundles a and b supply terminal sporophylls; union of bundles indicate
. Contributions from the Hull Botanical Laboratory. Plants. ;6o B0TAS1CAL GAZETTE XOVEMBEK of elongated cells similar to those of the younger condition of the strobilus. Occasionally the xylem extends a short distance into the stalk of the sporophyll, the bundle here, however, usually consisting. V Figs. 13-22.—Cross-sections of mature strobilus at approximately levels indicated by numbers to left of strobilus shown in fig. 9; branches of bundles to various sporo- phylls indicated by a, b, c, etc., xylem indicated by black; bundles a and b supply terminal sporophylls; union of bundles indicated by combining letters, jd in figs. 17-19; fig. 19 shows complete cylinder below lowermost sporophyll; in fig. 18 / and c united, in fig. 19 separated, in fig. 20 c and •;;/ united, and in fig. 22 km one of the 3 large strands from sterile portion of axis; fig. 22 also shows traces to 3 uppermost scales, SCI, sc2, and scj; note concentric character of terminal portions, as in r, </, and e, in fig. 15; X36. only of the phloem portion (fig. 39), the xylem usually ending within the cortex of the"axis. The bundles of this region are collateral endarch in the lower portions. In the upper portions, however, the bundles frequently show centripetal xylem (figs. 40, 44), giving mesarch bundles, and. 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 Hull Botanical Laboratory. [Chicago : University of Chicago Press
Size: 1624px × 1538px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1895
