Crystalloids and globoids. Caption in source: Fig. 349.—Aleurone grains from the Castor bean; a, a grain viewed in direct transmitted light, showing a single crystalloid and globoid. b, the same grain in indirect light. showing its ellipsoidal shape. c. the same grain viewed on end. the globoid toward the top. d. a grain viewed in direct light, showing a crystalloid and three globoids. e, the same grain in a diﬁerent position. showing several globoids. i, two grains each with a globoid but no crystalloid. g, a grain with crenate or pitted surface and no crystalloid visible. h, a grain with large crystalloid and numerous small globoids. Fig. 350.—Aleurone grains from the Brazil nut. Each grain usually con tains one crystalloid and one globoid or a globoidal mass. The envelope is very t m. Fig. 351.—Aleurone grains from Fennel fruit. Globoids are seldom visible, but rosettes of calcium oxalate crystals are present in all but the larger grains. Fig. 352.—Aleurone grains from Almond. The smaller grains each contain one or more very small globoids. while the larger grains sometimes contain a ,rosette of calcium oxalate crystals. ' ' Fig. 353.—Aleurone grains from Nutmeg. The crystalloids are very per fectly formed. The globoid is attached at one corner of the crystalloid by a very thin envelope. Fig. 354.—A cell from the aleurone layer of Wheat. The aleurone is in very small angular grains, frequently called “amorphous” aleurone, and sur rounds the denscr nucleus. Fig. 355.-—A cell from Pea seed inclosing: a, the nucleus; b, ectoplasm; c, starch grains; d, small aleurone grains.
Edson Sewell Bastin, rev. by William Baker Day
A Revision of Bastin's College Botany, G. P. Engelhard Publishing of Chicago, page 145