White in visible light but quite dark in UV, and stands out in an otherwise dull/grey background in UV. Last updated on 6 May 2015Socotra Related Posts SocotraPlantsBoraginaceaeFlowers 2 Feb 2015Heliotropium socotranumby morten SocotraPlantsBoraginaceaeFlowers 7 Feb 2015Heliotropium socotranumby morten SocotraPlantsBoraginaceaeFlowers 1 Feb 2015Heliotropium dentatumby morten SocotraPlantsUVFlowers 1 Feb 2015Lindenbergia sokotrana UVby morten SocotraPlantsBoraginaceae 14 Dec 2023Heliotropium balfouriiby morten SocotraPlantsBoraginaceaeFlowers 10 Feb 2015Heliotropium nigricansby morten SocotraPlantsBoraginaceaeFlowersUV 2 Feb 2015Heliotropium socotranum UVby morten SocotraPlantsBoraginaceaeLeaves 10 Feb 2015Heliotropium nigricansby morten FirhminSocotraPlantsBoraginaceae 1 Feb 2023Heliotropium nigricansby morten Pousada XaraésPantanalBrazilPlantsBoraginaceaeFlowers 15 Nov 2013Heliotropium indicumby morten