Anthurium elsieae (Araceae), A New Species from the Eastern Amazon Domain

A new species, Anthurium elsieae, from the Amapá State Forest in the Eastern Brazilian Amazon is described and illustrated. Belonging to the Anthurium sect. Schizoplacium, the species differs from its Amazonian congeners, A. pentaphyllum and A. eminens, by a unique combination of morphological characters, including a short petiole (10–13 cm), inconspicuous venation with a marginal collective vein, and a notably short spadix (ca. 1.7 cm long). Detailed morphological descriptions, habitat information, and diagnostic features are provided. The species appears to be narrowly distributed, occurring at approximately 30 m elevation in terra firme forest. An identification key to the species of Anthurium sect. Schizoplacium is also presented. The discovery of this species highlights the relevance of continued taxonomic and floristic efforts for improving biodiversity knowledge in the Amazon domain and supporting conservation planning.