FIGURE 4 in Vincetoxicum strigosum (Asclepiadoideae, Apocynaceae), a new species from northeastern Thailand

FIGURE 4. SEM images of Vincetoxicum strigosum (A–C) and V. kerrii (D-F). A, D. Surface of adaxial epidermal cells, with flat (A) or papillose (D) outer periclinal wall of epidermal cells. B, E. High magnification of A and D showing accumulation of cuticle components that takes the form of an interlace pattern (B) comprising rings of ten or more elongated elements arranged around a circular area and joining one another, or a striation (E). C, F. Surface of abaxial epidermal cells. Photographs taken from A. Kidyoo 51 A-C and A. Kidyoo 65 D-F.