FIGURE 11 in A remarkable new species of Davilla Vand. (Dilleniaceae, Dolicocarpoideae) from the Brazilian Savanna supported by morphological and anatomical data

FIGURE 11. Cross-sections of the leaf blades of Davilla elliptica (a–d), D. grandiflora (e–h), and D. pygmaea M.J. Silva (i–l), submitted to histochemical tests. a, c, e and k petiole. b, f, g, i and j midrib. d, h and l leaf blade. Histochemical tests: a positive reaction for phenolic compounds in tissues, indicated by an arrowhead, *, and black color; note the presence of phenolic compounds in the endodermal cells, and in the idioblast secretions. b–l. starch grains in the tissues; note the presence of starch grains in the endodermis adjacent to the vascular system in b, c, g, i and k. ep = epidermis. en = endodermis. fi = fibers. pa = parenchyma. ph = phloem. pp = palisade parenchyma. sc = sclereids. sp = spongy parenchyma. vb = vascular bundle. xy = xylem. asterisks = idioblasts. arrows = Caspary strip. Scales: i = 500 μm; b = 200 µm. a, c–h and j–l = 50 µm.