11. DIGITARIA SWALLENIANA Henrard, Monogr. Digitaria 722. 1950.

Trichachne sericea Swallen, Contr. U.S. Natl. Herb. 29 (6): 264. 1948 [1949].

— TYPE: BRAZIL. Rio Grande do Sul: Pelotas, Instituto Agronómico do Sul, collected on sandy campo, 20 Apr 1946, J. Swallen 9120 (holotype: US 1912777; isotype: S!) .

Iconography — Vega and Rúgolo de Agrasar (2012: 307).

Geographical Distribution and Ecology — Peru (Tovar 1993), Brazil, Paraguay, Uruguay, and Argentina. It is frequent in loose sandy lands from sea level to 1,276 m.