. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 152(2. Peppergrass. Elements of seed insurface view. Significance of referenceletters same as in Fig. 152. X160. (K. B. WiNTON.) Fig. 152. Peppergrass (LepidiumVirginicum). Seed in cross sec-tion. S spermoderm consists ofep epidermis, pal palisade cells,and p parenchyma; E endo-sperm; C cotyledon with aepouter epidermis and al aleuronecells. X160. (K. B. WiNTON.) outer ends, and the palisade cells (up to 40 11) of the usual type. Theepidermal cells of the immature s
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . Fig. 152(2. Peppergrass. Elements of seed insurface view. Significance of referenceletters same as in Fig. 152. X160. (K. B. WiNTON.) Fig. 152. Peppergrass (LepidiumVirginicum). Seed in cross sec-tion. S spermoderm consists ofep epidermis, pal palisade cells,and p parenchyma; E endo-sperm; C cotyledon with aepouter epidermis and al aleuronecells. X160. (K. B. WiNTON.) outer ends, and the palisade cells (up to 40 11) of the usual type. Theepidermal cells of the immature seed contain numerous starch grainswhich are replaced at maturity by mucilage. Bibliography of Cruciferse, p. 176: Bohmer; Gram. FIELD PENNYCRESS. According to Bohmer and Gram, the seeds of this common weed(Thlaspi arvense L.) frequently occur in linseedand rape cake (Fig. 153). The epidermis and parenchymatous secondlayer form a membrane of obliterated cells overthe paUsade layer. In cross section the palisadea cells are of unequal height and have strongly Fig. 153. Field Penny- thickened inner and sid
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