Pelargonium longicaule flower from behind

From behind, the Pelargonium longicaule flower shows its upper petal pair bending backwards over the longest of the five sepals, the one that contains the hollow spur, which is tightly fused to the top of the pedicel. This spur houses the nectar in pelargonium flowers generally, performing a key function in attracting and rewarding pollinators.

The upper petals are nearly double the length of this sepal in picture. The other four sepals, also narrow and acutely pointed, curve out below the lower petals. The sepals in picture have red-rim margins and midribs.

The pedicels are dark red and faintly, sparsely white-haired, the hairs very short (Curtis-Scott, et al, 2020; Manning, 2007; Manning and Goldblatt, 1996; iNaturalist; https://www.worldfloraonline.org).