Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 646
their peculiar arrangement in Fio. 457.-Oblique section of foot-the leaf-stalk of the common brake which stalk of fern leaf, showinggives to the transverse section the mark- bundle of scalariform ducts,ing commonly known as £ King Charles in the oak. A thin section, especially if somewhat oblique… … 600 MICROSCOPIC STRUCTURE OF HIGHER CRYPTOGAMS bundles of scalariform ducts or{tracheides are usually surrounded by-sheaths of sderenchyme, tissue composed of cells the walls of whichhave become very hard and of a deep brown colour. These scleren-chymatous sheaths are a very conspicuous feature in…
Microscopy
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