. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 503. China Cassia {Cinnamomiim Cassia). Cross section of bark, su cork cells;for cortex; jc/stone-cell ring (pericycle); />^ bast. (Moeller.) rather thick, brown walls. Radial partitions often divide the cells intodaughter cells. Distributed through this ground tissue are stone cells,many of which are thickened only on the inner side. Both theparenchyma and the stone cells contain rounded starch grains (, B) ranging up to 20 fx in diameter (mostly over 10
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 503. China Cassia {Cinnamomiim Cassia). Cross section of bark, su cork cells;for cortex; jc/stone-cell ring (pericycle); />^ bast. (Moeller.) rather thick, brown walls. Radial partitions often divide the cells intodaughter cells. Distributed through this ground tissue are stone cells,many of which are thickened only on the inner side. Both theparenchyma and the stone cells contain rounded starch grains (, B) ranging up to 20 fx in diameter (mostly over 10 /i), with a 588 SPICHS AND CONDIMENTS. more or less distinct hilum. Most of the grains arc in aggregates of 2-4individuals 4. The Pericyde (scl) in the young stem consists of groups of bastfibers (Fig. 504, b) and separating parenchyma, but later numerous stone. Fig. 504. China Cassia. Radial longitudinal section of bark. f>r parenchyma of cortex;bp parenchyma of bast; b bast fibers; st stone cells; sell mucilage cells; 5 sieve tubes;w medullary rays. X160. (Mqeller.) cells are formed, which after a time make up the greater part of the bast fibers are longer and thinner-walled than those of the bast;the stone cells are larger and thicker-walled than those of the 5. llic Bast Zone (pJi), as seen in cross-section, consists of broadradial bands of phloeni elements separated by narrow medullary ground tissue of the phloem is a parenchyma of narrow, longitudi-nally elongated cells, among which are distributed larger cells containingmucilage or oi4r~filso bast fibers. Numerous starch grains like those ofthe cortex occur in the parenchyma. The inner membrane of the oil cells secretes essential oil and resin, which either forms brown massesin the cells or impregnates the tissues. Sections mounted in glycerineor alcohol o
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectplantanatomy
