. Text-book of botany, morphological and physiological. Botany. FIG. 421. —Bulb of Fritillaria imperialis in November: A longitudinal section of the whole bulb reduced, z z the coalescent lower portions of the bulb-scales, b b their free upper portions; the scales enclose a cavity / which contains the decayed flower-stem : next year's bud is formed in the axil of the innermost scale ; its first leaves will form the new bulb, while its axis will develope into the flower-stem; the root w springs from the axis of this bud. B longitudinal section of the apical region of next year's bud, j apex of
. Text-book of botany, morphological and physiological. Botany. FIG. 421. —Bulb of Fritillaria imperialis in November: A longitudinal section of the whole bulb reduced, z z the coalescent lower portions of the bulb-scales, b b their free upper portions; the scales enclose a cavity / which contains the decayed flower-stem : next year's bud is formed in the axil of the innermost scale ; its first leaves will form the new bulb, while its axis will develope into the flower-stem; the root w springs from the axis of this bud. B longitudinal section of the apical region of next year's bud, j apex of the stem, bb'b" youngest leaves. In Musa a number of flowers even stand side by side in the axil of a bract, and in Musa Ensete two rows one over the other. In the Spadiciflorae the bracts are often absent8, and the ebracteate flowers stand on the rachis of the inflorescence, but are distinctly lateral in their origin. This is also the explanation of the branching of Lemna, which does not in general form any foliage-leaves, but the vegetative body of the plant consists of disc-like or swollen portions of the axis containing chlorophyll which branch laterally out of one another, and are connected together only by slender stalks, or soon separate. The plane of rami- fication' coincides with the surface of the water on which they float; each shoot 1 Further details of the great variety of modifications of these processes of growth will be found in Irmisch, Knolren und Zwiebelgewachse (Berlin 1850), and Biologie und Morphologie der Orchideen (Leipzig 1853). 2 According to Magnus (Bot. Zeitg. 1869, p. 770) the flower of Naias occupies exactly the place of the first leaf of a branch; but it appears from p. 771 as though the flower and the shoot that bears it were the bifurcations of a dichotomy. 3 Compare under Dicotyledons, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appea
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1882
