Fig. 1.

General morphology and micromorphology of the selected Pinguicula species that were examined. (A–D) General morphology and micromorphology of a P. agnata flower showing the entrance to the flower (En) with multicellular clavate slender trichomes (I), the throat (Th) with multicellular compact thick trichomes (II) in the front and two types of long and slender or short and compact non-glandular trichomes (III) that are located at the entrance to the spur (Sp); note the presence of a pistil (Ps) and a stamen (S) in the throat; scale bars = 2 mm, 2 mm, 1 mm and 1 mm, respectively. (E and F) Micromorphology of a P. gigantea flower; note the similar distribution and micromorphology of the non-glandular trichomes (Iʹ, IIʹ, IIIʹ) compared with P. agnata; scale bars = 1 mm and 1 mm, respectively. (G and H) Micromorphology of the P. rectifolia throat with generative organs and many celled uniseriate slender non-glandular trichomes indicated by an acute apical cell that is located in the throat and basal part of the spur; scale bars = 1 mm and 300 µm, respectively. (I) Micromorphology of the P. hemiepiphytica throat with long and slender multicellular non-glandular trichomes and a stamen; scale bar = 1 mm.