Aizoon nigrescens Placement status: name or taxon excluded (unspecific) (Apparently a herbarium name from Tropicos. )Aizoon nigrescens Eckl. & Zeyh. sec. TROPICOS 1988+: 2 jul 202011. TROPICOS 1988+: Tropicos.org. Missouri Botanical Garden – https://tropicos.org: 2 jul 2020Content