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. 2020 Jun 27;126(6):1039–1048. doi: 10.1093/aob/mcaa123

Fig. 6.

Fig. 6.

PAS reaction and Lugol’s staining of various non-glandular trichomes of the Pinguicula species that were examined that are pollinated by Lepidoptera; note the pollen grains (arrow) with a positive staining of the starch grains inside. (A) PAS reaction of the P. moctezumae non-glandular trichomes that are located in the basal part of the spur; scale bar = 50 µm. (B and C) Negative result of the Lugol’s staining of the P. moctezumae non-glandular trichomes; scale bars = 50 µm and 100 µm, respectively. (D) Negative result of the Lugol’s staining of the P. esseriana non-glandular trichomes; scale bar = 100 µm. (E) Negative result of the Lugol’s staining of the P. moranensis non-glandular trichomes; scale bar = 100 µm. (F) Negative result of the Lugol’s staining of the P. emarginata non-glandular trichomes; scale bar = 100 µm. (G) Negative result of the Lugol’s staining of the P. rectifolia non-glandular trichomes; scale bar = 100 µm.