American journal of pharmacy . Fig. 4, Rhamnus Frangula, longitudinal section. A, epidermis ; b, collen-chyma ; c, sclerenchyma ; e, medullary ray ; /, bast bundle ; gy parenchyma ;h, crystals of calcium oxalate. Rhamnus Frangula contains no stone cells, while the RhamnusCalifornica and the Rhamnus Purshiana contain a large number ofthem, scattered in large, irregular groups below the cork, and usuallyoutside the region of bast. The presence or absence of stone cellsis very easily noted by one familiar with vegetable tissues, and thisone characteristic is suggested as a means of distinction be
American journal of pharmacy . Fig. 4, Rhamnus Frangula, longitudinal section. A, epidermis ; b, collen-chyma ; c, sclerenchyma ; e, medullary ray ; /, bast bundle ; gy parenchyma ;h, crystals of calcium oxalate. Rhamnus Frangula contains no stone cells, while the RhamnusCalifornica and the Rhamnus Purshiana contain a large number ofthem, scattered in large, irregular groups below the cork, and usuallyoutside the region of bast. The presence or absence of stone cellsis very easily noted by one familiar with vegetable tissues, and thisone characteristic is suggested as a means of distinction betweenRhamnus Frangula and the other two barks. In the case of Rhamnus Purshiana and Rhamnus Californica, it / dm^ ^^es. ^^S^ S> Rhamnus Californica. powder. B, collenchyma ; r, sclerenchyma(cross); ^, sclereuchyma (longitudinal); d, stone cells; e, medullary ray ; _/,bast bundle ; ^, parenchyma ; h, crystals of calcium oxalate.
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Keywords: ., bookcentury1800, bookidamericanjournal69phi, booksubjectpharmacy
