. Contributions from the Hull Botanical Laboratory. Plants. 1916] IIOFFSTADT—PIPER MET 11YSTICUM "5 2. Each bundle of both the peripheral and pith rings has a cam- bium. The inner ones do not enlarge greatly. The outer or peripheral bundles lay down a ring of wood often 4-5 mm. in thick- ness. The proportion of xylem to phloem is about 8:1 (fig. 18).. 16 Figs. 16, 17.—Fig. 16, detail of pericycle of P. methysticum; fig. 17, detail of medullary ray; C, cambium; X820. Late in the history stem an interfascicular cambium appears (fig. 15), which cuts off segments on the inside only; ve
. Contributions from the Hull Botanical Laboratory. Plants. 1916] IIOFFSTADT—PIPER MET 11YSTICUM "5 2. Each bundle of both the peripheral and pith rings has a cam- bium. The inner ones do not enlarge greatly. The outer or peripheral bundles lay down a ring of wood often 4-5 mm. in thick- ness. The proportion of xylem to phloem is about 8:1 (fig. 18).. 16 Figs. 16, 17.—Fig. 16, detail of pericycle of P. methysticum; fig. 17, detail of medullary ray; C, cambium; X820. Late in the history stem an interfascicular cambium appears (fig. 15), which cuts off segments on the inside only; very late a few segments may be cut off on the other side (fig. 17). This closes the stem cylinder. The interfascicular cambium appears much later in the nodes and remains active much 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
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1895
