Text-book of botany, morphological and physiological . UJ -1-^^, r^. T!| Fig. 84.—Longitudinal section of the fibro-vascular bundle of Ricinus, the transverse section being shown in Fig. 82;r cortical parenchyma ; g^s bundle-sheath ; tn parenchyma of the pith ; b bast-fibres; / phloiim-parenchyma; c cambium,the row of cells between c and / is afterwards developed into a sieve-tube. In the xylem portion of the bundle the elementsare developed beginning from s gradually to ^; s the first narrow and very long spiral vessel, s wide spiral vessel, both witha spiral band which can be unrolled; / ves
Text-book of botany, morphological and physiological . UJ -1-^^, r^. T!| Fig. 84.—Longitudinal section of the fibro-vascular bundle of Ricinus, the transverse section being shown in Fig. 82;r cortical parenchyma ; g^s bundle-sheath ; tn parenchyma of the pith ; b bast-fibres; / phloiim-parenchyma; c cambium,the row of cells between c and / is afterwards developed into a sieve-tube. In the xylem portion of the bundle the elementsare developed beginning from s gradually to ^; s the first narrow and very long spiral vessel, s wide spiral vessel, both witha spiral band which can be unrolled; / vessel thickened partly in a scalariform, partly in a reticulate manner; h h wood-cells;/ pitted vessel; at q the absorbed septum; h h wood-cells; f pitted vessel, still young; the pits at first show the outerborder; afterwards the formation of the inner pore commences; at ttt in the wall of the vessel are observed the boundary-lines of the adjoining cells which have been removed. spiral vessels^ either separately or together, or reticulated vessels and eventuallyp
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1875
