FIGURE 2 in A taxonomic revision of the western South American genus Presliophytum (Loasaceae)

FIGURE 2. Microstructure and trichome morphology of Presliophytum. A. Adaxial foliar surface of a mature leaf of Presliophytum arequipense (Ortiz et al. 121, BONN). Presliophytum incanum has virtually identical indumentum. B. Abaxial foliar surface of a mature leaf of Presliophytum arequipense (Ortiz et al. 121, BONN). Presliophytum incanum may have similar indumentum or mostly made up by scabrid trichomes. C. Adaxial foliar surface of a mature leaf of Presliophytum heucheraefolium (Weigend et al. 7691C, BONN). This species and Presliophytum sessiliflorum have abundant and relatively long uniseriate glandular hairs, on leaves and younger stems. Presliophytum malesherbioides has similar but much shorter trichomes in some areas of the stem. D. Abaxial foliar surface of a mature leaf of Presliophytum heucheraefolium (Weigend et al. 7691C, BONN). GL: Glochidiate trichome, GT: Uniseriate glandular trichome, SC: Scabrid trichome, SS: Short smooth trichome. Scale bars A, B: 100 μm; C, D 200 μm.