13.1. Tynanthus micranthus Correia de Mello ex Schumann in Engler (1894: 221) (Figs. 10 f–h, 11 b).

Diagnosis:— Tynanthus micranthus can be recognized by the smell of clove on vegetative portions and the small and bilabiate white corolla.

Reproductive Period:— Flowers were collected from September to December, fruiting in June, October, November and December.

Distribution and Habitat:— It occurs in Paraguay, Brazil, and Argentina (Lohmann 2010, Lohmann & Taylor 2014, Medeiros & Lohmann 2015). Within the study area, it was registered in Céu Azul, Matelândia/Serranópolis do Iguaçu, Capanema, Foz do Iguaçu, and in the PARNA Iguazú, being a new record for Argentina.

Selected Specimens Examined:— ARGENTINA. Misiones, Parque Nacional Iguazú: Puerto Iguazú, 11 August 1995, Vanni 3487 (CTES!) . BRAZIL. Paraná, Parque Nacional do Iguaçu: Capanema, 23 November 1966, Lindeman 3354 (MO, US) ; Céu Azul, Trilha Cachoeira do Rio Azul, 14 September 2015, Hammes 66 (UNOP!) ; Foz do Iguaçu, 24 November 1966, Lindeman 3409 (MBM!, MO, NYBG, P, US) ; Serranópolis do Iguaçu, 13 October 2016, Caxambu 7614 (HCF!) .