20. Tanaecium truncatum (A.Samp.) L.G.Lohmann, Ann. Missouri Bot. Gard. 99(3): 467. 2014. Fig. 1J

Periarrabidaea truncata A.Samp., Bol. Mus. Nac. Rio de Janeiro 12: 86. 1936. Type: Brazil, Amazonas, Manaus, capoeira além da Villa Municipal, lugar alto, 27 July 1931, A. Ducke s.n. (holotype, RB– 24093!; isotype, R– 28731!).

Habitat and distribution.

This species occurs in humid forest vegetation in Bolivia (Pando), Brazil (Amazonas, Mato Grosso, Rondônia), and Peru (Cusco, Loreto, Madre de Dios, Ucayali).

Phenology.

Flowering: November to March, and May to October; fruiting: February, July to August, and October to December.

Notes.

This species differs from other Tanaecium species by the foveolate domatia, calyces basally constricted, and pale-yellow corollas (Tab. 1).