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

Fig. 5.

Fig. 5.

Histochemistry of the flower non-glandular trichomes from the species belonging to the Pinguicula and Isoloba subgenera; note the numerous starch grains inside the pollen grains (arrow). (A) Herbarium material of the P. alpina (KRA 0299930) that were examined. (B and C) Negative result of the Lugol’s staining of the P. alpina non-glandular trichomes; scale bars = 100 µm and 50 µm, respectively. (D) Herbarium material of the P. vulgaris subsp. vulgaris (KRA 71415) that were examined. (E and F) Negative result of the Lugol’s staining of the P. vulgaris subsp. vulgaris non-glandular trichomes; note the pollen grains (arrow) with a positive staining of the starch grains inside; scale bars = 100 µm and 100 µm, respectively. (G) Herbarium material of the P. vulgaris subsp. bicolor (KRA 0138573) that were examined. (H and I) Negative result of the Lugol’s staining of the P. vulgaris subsp. bicolor non-glandular trichomes; note the pollen grains (arrow) with a positive staining of the starch grains inside; scale bars = 100 µm and 100 µm, respectively. (J–L) Negative result of the Lugol’s staining of the P. lusitanica non-glandular trichomes; scale bars = 50 µm, 50 µm and 50 µm, respectively.