Disynaphia megapotamica (Spreng.) P.L.R.Moraes, 2023

Moraes, Pedro Luís Rodrigues De, 2023, Redux Sellow: revealing Sellow’s collections from the Herbier Impérial du Brésil at the Paris Herbarium, Phytotaxa 596 (1), pp. 1-216 : 183

publication ID	https://doi.org/ 10.11646/phytotaxa.596.1.1
DOI	https://doi.org/10.5281/zenodo.7912648
persistent identifier	https://treatment.plazi.org/id/03BF87F0-CEFF-0BDD-66C8-D5F3FC4DAD0F
treatment provided by	Plazi
scientific name	Disynaphia megapotamica (Spreng.) P.L.R.Moraes
status	comb. nov.

Treatment

Disynaphia megapotamica (Spreng.) P.L.R.Moraes , comb. nov.

Basionym: Chrysocoma megapotamica Sprengel (1826: 424) View in CoL .

Type:— BRAZIL. Ad fl. magnum. (Rio grande Amer. Austr. Sello.), Rio Grande do Sul, inter Encruzilhada et Caçapava , Nov–Dec 1825, Sellow 3124 (lectotype P02671867 ! ex Herb. Sprengel 423, right-hand specimen, designated here; isolectotype P02671867 !, left-hand specimen; Fig. 43a View FIGURE 43 ) .

Heterotypic synonyms: Eupatorium ericoides Candolle (1836: 150) .

Type :— BRAZIL. Rio Grande , Herbier Impérial du BRÉSIL N.o 843 = Sellow s.n. (lectotype P00742391 !, designated here, Fig. 43d View FIGURE 43 ; isolectotype G-DC! – G00494074 ). Syntype: BRAZIL. Rio Grande, Herbier Impérial du BRÉSIL N.o 775 ( P02671866 !, Fig. 43c View FIGURE 43 ) .

Disynaphia ericoides (DC.) King & Robinson (1971b: 124) View in CoL .

Cortaderia selloana (Schult. & Schult.f.) Ascherson & Graebner (1900: 325) View in CoL is another name that illustrates a problematic typification in the literature. The basionym, Arundo dioeca Sprengel (1825a: 361) View in CoL non A. dioica Loureiro (1790: 55) View in CoL , was renamed Arundo selloana Schultes & Schultes (1827: 605) View in CoL . Gynerium argenteum Nees von Esenbeck (1829: 462) View in CoL is a nom. illeg. superfl. because Nees von Esenbeck relied on A. dioeca View in CoL , creating a new name instead of making a new combination with A. selloana View in CoL . For these names, the original material annotated by K. Sprengel and Nees von Esenbeck was not destroyed at B, which allowed Conert (1961) to assign the nomenclatural types included below with the related synonyms (partially according to Connor & Edgar 1974).