On Cornerian and Other Terminology of Angiospermous and Gymnospermous Seed Coats: Historical Perspective and Terminological Recommendations

Summary A revision of Corner's (1976) classification of angiospermous (especially dicotyledonous) seeds is given in outline form according to the histology of the seed coat, namely, exo‐, meso‐, and endotestal seeds versus exo‐, meso‐, and endotegmic seeds. This revision is presented in the context of a historical perspective, and with certain explanations and caveats for the use of the classification. A digression pursues the terminology of the gymnospermous seed coat, in particular its division into sarco‐, sclero‐, and endotestal layers. An appendix lists published reviews of Corner's 1976 book The seeds of dicotyledons.