Under this tegument is found a very thin, colorless membrane, which, with the testa or episperm, forms two per cent. of the weight of the wheat.    From Wordnik.com.  [Scientific American Supplement, No. 275, April 9, 1881] Reference

No. 5 indicates the testa or episperm.    From Wordnik.com.  [Scientific American Supplement, No. 275, April 9, 1881] Reference