Sydowiellina rionegrensis Bat., Holanda & Peres

URM 21420. Place of collection: Brazil; Amazonas; Manaus, left river bank of Rio Negro, Enseada Grande. Date of collection: 7 March 1961. Associated organisms: Leguminosae gen.indet. (leaf); Micropeltis sp.; Parapeltella soroceae; Stigmopeltella amazonensis. Collector: Peres, G.E.P..