FIGURE 1 in The Isoetes longissima complex (Isoetaceae) in Italy: observations on the morphology of spores and leaves, and taxonomic implications

FIGURE 1. SEM images of megaspores and microspores of the examined taxa, taken from herbarium specimens (see Table 2). First column: proximal view of megaspores; second column: distal view of megaspores; third column: microspores. First line = Isoetes longissima (A, B, C); second line: I. velata (D, E, F); third line: I. sicula (G, H, I); fourth line: I. tiguliana (J, K, L); fifth line: I. dubia (M, N, O). For names of taxa see also Introduction.