Phosphorae Radiantii, from Latin phosphorus (light bearer) and radiantii (brilliance), is a bioluminescent flora in the Nebulosa Botanica cluster. It features delicate inflorescences with multiple asymmetrical flowers, each having five broad, translucent violet-hued petals with shimmering bioluminescent vein filaments. Numerous long stamens radiate outward, their anthers glowing warm orange contrasting cooler petal luminescence. The slender, wood-like stem bears fine luminescent threads connecting flower nodes, enabling light-responsive swaying. Emission occurs at 420-490 nm via photoprotein complexes in epidermal petal cells and filamentous stem tissue. Native to tropical rainforest mid-canopy niches (15-25°C), it grows 15-30 cm tall and weighs 10-25 g. It aids nocturnal forest illumination and pollination by crepuscular insects and moths attracted to its vivid blue-green glow, with swaying facilitating pollen transfer. One of 10 species in its genus, it shows unique evolution for stable floral bioluminescence.