American journal of pharmacy . resulting from the disintegration of thecortical parenchyma cells with their shriveled contents forms a con-siderable part of the jam, but has little use in identification. Am. Jour. 1904. J Atiatojny of Edible Berries. 437 THE RED RASPBERRY. Rubus Idaens L. occurs native in various parts of the Old World,and is the parent of the raspberries cultivated in European gardens. Bailey states that the red raspberries cultivated in America areoffspring of the native R. strigosus Michx., which, however, is closelyrelated to the European raspberry R. Ida
American journal of pharmacy . resulting from the disintegration of thecortical parenchyma cells with their shriveled contents forms a con-siderable part of the jam, but has little use in identification. Am. Jour. 1904. J Atiatojny of Edible Berries. 437 THE RED RASPBERRY. Rubus Idaens L. occurs native in various parts of the Old World,and is the parent of the raspberries cultivated in European gardens. Bailey states that the red raspberries cultivated in America areoffspring of the native R. strigosus Michx., which, however, is closelyrelated to the European raspberry R. Idaeus L. The yellow varie-ties are but albino forms of these species. A red variety of R. Idaeusgrown in England, several red and yellow garden varieties ofR. strigosus grown in New Haven, were studied by the writer, andwere all found to be practically identical both in macroscopic andmicroscopic structure. Macroscopic Structure.—The raspberry, blackberry and otherbramble fruits (Rubus) are intermediate in both macroscopic and. II IV Fig. 7.—Red Raspberry. I Compouud fruit, X i. 11 Transverse section ofa drupelet, X 32. Epi, epicarp ; Hy, liypoderm ; Mes, mesocarp ; F, outerendocarp ; F, inner endocarp ; S, testa ; R. raphe ; E, endosperm ; Em,embryo. Ill Stone, X i. IV Stone, X 8. microscopic structure between the strawberry [Fragarta) and thestone fruits {^Prunus). They resemble the strawberry in that theyare compound Jruits with numerous individual fruitlets on a commonreceptacle (although unlike the strawberry, the cortex of the recep-tacle is not fleshy, and bears the fruitlets on elevations, not indepressions); and they resemble the stone fruits in the structure ofthe pericarp and seed, each individual fruitlet being in fact a minia-ture drupe. The resemblance between the raspberry drupelet andthe peach is especially striking. In both the epicarp is pubescent, Loc. cit., p. 287. 438 Anatomy of Edible Berries. {^^pSerim- the mesocarp is fleshy, the endocarp [Fig. 7, III
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