Vouchers for all collections are on deposit at the Universidad de Costa Rica (USJ) mycological herbarium.
Duplicates are in the Field Museum (F) and the New York Botanical Garden (NY).

1. Agaricus sp.
   
2. Lepiota hemisclera Berk. & Curt.
   
3. Leucoagaricus rubrotinctus (Peck) Singer
   
4. Leucocoprinus fragilissimus (Ravenel in Berk. & Curt.) Pat.
   
5. Leucocoprinus sulphurellus Pegler
   
6. Rugosospora pseudorubiginosa (Cifuentes & Guzmán) Guzmán & Bandala