Brittonia 44 (1): 24 (Daly 1989). — Tetragastris pilosa Cuatrec., Bol. Mus. Paraense Emílio Goeldi, N.S., Bot. 11: 8 (Cuatrecasas 1961).
VERNACULAR NAMES. — Wp: waluwaɨsili • Br: breu-branco.
HERBARIUM DATA (FG). — 30 collections at CAY. Sel. exs.: A.H. Gentry et al. 63129.
SIZE. — Up to 12 m tall (Daly 2002).