FIGURE 16 in Persepolium (Polygoneae): A new genus in Polygonaceae based on conventional Maximum Parsimony and Three-taxon statement analyses of a comprehensive morphological dataset

FIGURE 16. Tricolporate pollen grains of Polygonum subsection Spinescentia, equatorial view (SEM): (A–C)—P. salicornioides (Kotschy 468, LE), foveolate to perforate (punctate) pollen surface. (D–E)—P. spinosum (Bornmüller 5083, LE), foveolate to perforate (punctate) pollen surface. (F, I)—P. dumosum (Kotschy 242, LE), striate-perforate pollen surface. (G–H)—P. aridum (Sawers, 1868, Haussknecht s.n. LE), foveolate, foveolate-perforate to microreticulate-foveolate pollen surface. Scale bar = 3μm. Images: E. Severova & O. Yurtseva.