- Source: O. nigricans
- Daftar Spesies Syzygium
- Botana
- Daftar spesies Aspergillus
- Ostorhinchus
- Evarcha nepos
- Evarcha patagiata
- Widani
- Daftar spesies Ixora
- Daftar spesies Dendrobium
- Clarias
- O. nigricans
- Acanthosis nigricans
- Aquilegia nigricans
- Black phoebe
- Exidia nigricans
- Xanthophyllum nigricans
- Otholobium
- Severe achondroplasia with developmental delay and acanthosis nigricans
- Onchidella nigricans
- Philippine mouse-deer
O. nigricans may refer to:
Onchidella nigricans, a small air-breathing sea slug species
Oncometopia nigricans, a sharpshooter species in the genus Oncometopia found in North and South America
See also
Nigricans (disambiguation)