Physarum compressum
Alb. & Schwein.
UCR 36. Place of collection: Costa Rica; San José; San Pédro; Sabanilla; Cinco Esquinas; San Ramón de Tres Ríos. Date of collection: 6 June 1963. Associated organism: Plantae indet. (bark). Collector: Sáenz R., J.A..