Florae Ignis, meaning flower of fire, is a bioluminescent herbaceous plant endemic to nutrient-rich hydrothermal vent ecosystems. It grows 10-30 cm tall with robust stems supporting multiple semi-translucent flowers featuring violet-red iridescent petals with orange-yellow specks near the center. Bioluminescence occurs at 470-530 nm (blue-green), originating from photoprotein complexes in basal petal tissues, producing a striking orange glow enhanced by pigments. Adapted to aquatic undulations in 0-30°C waters, it belongs to the Herbaceous Scintillans cluster, likely a novel deep-sea genus. Pollination is likely by nocturnal vent fauna attracted to luminescent signals, facilitating mutualism. Its endangered status highlights its fragile specialized habitat.