Pentagonia gomez-loritoi is a "palmoid" or "Corner Model Tree" of the Costa Rican and Panamanian rainforest belonging to the family Rubiaceae.

It is usually single-trunked (but occasionally branching low into several reiterations ) up to 6 m (20 ft) in height.

It is most noteworthy for its pairs of huge, entire margined, shiny oblanceolate leaves; each leaf up to 140 cm (55 in) in length by up to 56 cm (22 in) in width.

The pairs of leaves are spaced several inches apart along the stem.

The type specimen was collected near Oeste de Volio in Costa Rica by J. Gómez-Laurito & G. Vargas in 1990.