Early Ontogeny of the Foliage Leaf in Drimys Winteri Var. Chilensis

Foliar Venation of Angiosperms. II. Histogenesis of the Venation of Liriodendron

“…Of the published accounts of marginal growth of dicotyledonous leaves, the study by Gifford (1951) on the leaf development of Drimys most nearly resembles that described above for Liriodendron, thelatter differing only in that the activity of its submarginal initials is more variable. With the exception of Drinys and Zea (Mericle, 1950), in all previous accounts of marginal growth in angiosperms (Foster, 1936), the adaxial layer produced the palisade layer only, the remaining portion of the inner leaf tissues being derived from the abaxial layer or from the submarginal initials directlv.…”

Foliar Venation of Angiosperms. Ii. Histogenesis of the Venation of Liriodendron

“…Of the published accounts of marginal growth of dicotyledonous leaves, the study by Gifford (1951) on the leaf development of Drimys most nearly resembles that described above for Liriodendron, the latter differing only in that the activity of its sub. marginal initials is more variable.…”

Cataphyll Ontogeny in Pinus Lambertiana

“…MARGINAL GROWTH OF CATAPHYLLS.-The marginal growth occurring in various types of foliar organs in investigated angiosperms and gymnosperms has been shown to be essentially similar, in that it progresses by means of distinct vertical series of marginal and submarginal initials (Lund, 1872;Foster, 1935aFoster, , 1935bFoster, , 1936aFoster, , 1937Cross, 1936Cross, , 1938Cross, , 1940Cross, , 1942Griffith, 1950;Gifford, 1951;AI-Sherifi, 1952;Schneider, 1952). The marginal initials commonly divide so as to contribute only to the growth of the surface layer of the lamina.…”