Paepalanthus superbus var. niveoniger (Silveira) Hensold, 1988 4% complete

No common name

Hensold N (1988) Morphology and Systematics of Paepalanthus Subgenus Xeractis (Eriocaulaceae). Systematic Botany Monographs 23: 1-150. doi: 10.2307/25027709.