Rhytidhysteron rufulum
(Spreng.) Speg.
NY GS-VE 1917. Place of collection: Venezuela; Amazonas; Río Negro; Cerro de la Neblina, vicinity of base camp. Date of collection: 7 May 1984. Associated organisms: Plantae indet. (wood); Tubeufia palmarum. Collector: Samuels, G.J..