. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . ned from the apothecary, may be usedfor studying the gross anatomy of the fruit, also the microscopic structureof the i)rincii)al , although more satisfactory results are obtainedwith fresh berries, especially if picked at (hlTereiil stages of ripeness. JUNIPER BERRY. 583 For convenience, the tissues are here designated by the same termsas are employed for true fruits. Pericarp (Fig. 501). The Epicarp Cells (Fig. 502, ep) in surfaceview are rounded polygonal, wit
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . ned from the apothecary, may be usedfor studying the gross anatomy of the fruit, also the microscopic structureof the i)rincii)al , although more satisfactory results are obtainedwith fresh berries, especially if picked at (hlTereiil stages of ripeness. JUNIPER BERRY. 583 For convenience, the tissues are here designated by the same termsas are employed for true fruits. Pericarp (Fig. 501). The Epicarp Cells (Fig. 502, ep) in surfaceview are rounded polygonal, with thick walls pierced here and thereby pores. Division into daughter cells is often apparent. A browngranular substance fills the cells. On the edges where the bracts meet,these epidermal cells are extended so as to form blunt papilla?. 2. Fruit Flesh (p). The rounded, sac-like cells of the ground tissueare so loosely united that they separate readily on pressing with the cover-glass. In this tissue are large resin cavities often i mm. broad and twiceas long, lined on the inner surface by a layer of secreting cells. On. Fig. 501. Juniper Berry, Cross section of seed, and enveloping tissues. (Tschirch.) removing the angular seeds from the fruit, one or more of these sacsfilled with solid resin often remain attached to the surface. The con-spicuous elements of the fibro-vascular bundles are numerous bast fibersand reticulated vessels, also a few spiral vessels. Spermoderm. On the outer side where the seed is united with thefruit flesh no demarcation between the tissues of the two is evident;but on the free inner surface there are five distinct layers. I. The Gliter Epidermis and 2. The Subepidermal Coat each con-sists of a single layer of thin-walled cells, the former separating readilyfrom the latter in cross-section. 3. Sclerenchyma (Fig. 502, sc). The dense stone-cell tissue variesin thickness from two to over ten cell layers. Each of the thick-walled, 584 SPICES AND CONDIMENT
Size: 1647px × 1518px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectplantanatomy
