. Contributions from the Hull Botanical Laboratory. Plants. 1915] AASE—MEGASPOROPHYLLS OF CONIFERS In a species of the subgenus Eupodocarpus (figs. 171-182) the ovule-bearing branch is a dwarf lateral branch bearing at its tip one and occasionally two fertile sporophylls, and a few small bracts some distance below. The single inverted ovule is imbedded in the tissues of the " epimatium," which there is evidence for believing to be homologous with the ovuliferous scale in other conifers. At maturity the portion of the fruiting branch between the fertile sporophylls and the upper steri
. Contributions from the Hull Botanical Laboratory. Plants. 1915] AASE—MEGASPOROPHYLLS OF CONIFERS In a species of the subgenus Eupodocarpus (figs. 171-182) the ovule-bearing branch is a dwarf lateral branch bearing at its tip one and occasionally two fertile sporophylls, and a few small bracts some distance below. The single inverted ovule is imbedded in the tissues of the " epimatium," which there is evidence for believing to be homologous with the ovuliferous scale in other conifers. At maturity the portion of the fruiting branch between the fertile sporophylls and the upper sterile bracts becomes Figs. iji-iSi—Podocarpus (sp. of Eupodocarpus): figs. 171-181, transverse sections from base of uppermost sterile bracts (fig. 1S2, STB) to tip of strobilus; sib, bundles supplying sterile pair of bracts; b, bundle supplying sterile bract opposite fertile sporophyll; s, bundles inclining toward sterile bract then ending; b', bundle supplying bract of fertile sporophyll; s1, two bundles uniting into one enter scale of fertile sporophyll where the single bundle breaks into three (fig. 179, s1,, s'2, sls); distal to chalaza each of three bundles bends to pass down dorsal side of ovnle (figs. 180, 181; fig. 179; dotted lines between bundles indicate that one bundle is a continuation of the other); fig. 1S2, longitudinal section of strobilus; X7- The vascular anatomy was investigated only in cases of one fertile sporophyll. The vascular supply of the branch axis, after the traces to the sterile bracts have gone out, consists of three small and three large bundles. The median of the three smaller bundles enters what in the young stages appears like a bract opposite the fertile sporophyll; the two small lateral bundles bend in the same direction as the small median bundle, then end. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1895
