- Vegetation of the Atlantic Forest of the State of Rio de Janeiro and associated ecosystems;
- Phycological flora of the State of Rio de Janeiro;
HUNI has 6091 samples, divided into algae (65,7%), angiosperms (28,1%), bryophytes (5,4%) and ferns, licophytes and fungi (<1%).
In algae, HUNI has more than 1000 samples of Dictyotaceae collected along the Brazilian coast. HUNI still has 500 samples that mark the foundation of the herbarium and constitute the Claudia Bove Collection of Vascular Aquatic Plants.