FIGURE 4 in Leaf micromorphology of the Persicaria sect. Cephalophilon (Polygonaceae) and its systematic re-evaluation

FIGURE 4. LM and SEM micrographs of trichomes on leaf surface in the studied taxa. A–D. peltate GT (glandular trichome); A. Persicaria capitata (AB); B. P. chinensis var. paradoxa (AB); C. P. runcinata var. sinensis (AB); D. P. chinensis var. ovalifolia (AB); E–F. long stalked pilate GT; E. P. stringdbergii (AD); F. P. criopolitana (AD); G–P. NGT (nonglandular trichome); G–H. stellate NGT in P. palmata (AB); I–J. multiseriate NGT; I. P. chinensis var. hispida (AD); J. P. runcinata var. runcinata (AB); K–L. uniseriate NGT; K. Koenigia islandica (AD); L. K. pilosa (AB); M–P. surface types of NGT; M. NGT with striae of P. microcephala var. wallichii (AD); N. NGT with smooth surface of P. criopolitana (AB); O. NGT with papillae of K. nepalensis (AB); P. NGT with smooth surface of K. islandica (AD). AD, adaxial side; AB, abaxial side. Images: M.-J. Kong.