Heliotropium nigricans is white in visible light but quite dark in UV, and stands out in an otherwise dull/grey background in UV. endemic to Socotra. Last updated on 8 November 2024Socotra Related Posts SocotraPlantsBoraginaceaeLeaves 10 Feb 2015Heliotropium nigricansby morten SocotraBoraginaceaeFlowersUVPlants 2 Feb 2015Heliotropium socotranum UVby morten SocotraPlantsBoraginaceaeFlowers 10 Feb 2015Heliotropium nigricansby morten SocotraPlantsBoraginaceae 14 Dec 2023Heliotropium balfouriiby morten ArherSocotraBoraginaceaePlants 4 Feb 2023Heliotropium sokotranumby morten SocotraPlantsUVFlowers 1 Feb 2015Lindenbergia sokotrana UVby morten SocotraPlantsBoraginaceaeFlowers 1 Feb 2015Heliotropium dentatumby morten HoqSocotraBoraginaceaePlants 5 Feb 2023Heliotropium aegyptiacumby morten SocotraPlantsBoraginaceaeFlowers 7 Feb 2015Heliotropium socotranumby morten SocotraPlantsBoraginaceaeFlowers 2 Feb 2015Heliotropium socotranumby morten