Monteiroa dusenii (Ekman) Krapovickas (1951: 242)

3. Monteiroa dusenii (Ekman) Krapovickas (1951: 242) View in CoL . ≡ Malvastrum dusenii Ekman (1913:5-6) . Lectotype (first-step inadvertently designated by Hill (1982), corrected from “ holotype ”; second-step designated here): BRAZIL. Paraná. Pinhaes [São José dos Pinhais?], ad marge viae ferrea, 29 October 1908, P. Dusén 7084 (S-R-11224!; isolectotypes S13-4055! #, GH barcode 00052956!, MICH barcode 1104739!, MO barcode 2196974! #, F barcode 0062955F! #, NY barcode 00221848! #, P barcode 00156876! #). Figures 5 View FIGURE 5 and 22 View FIGURE 22 .

Nomenclatural notes: — Hill (1982) chose the collection of P. Dusén 7084 housed at S, cited in the protologue ( Ekman 1913), as holotype of Monteiroa dusenii . However, we could be able to locate two specimens of P. Dusén 7084 at S. Therefore, according to Art. 9.17, of the International Code of Nomenclature for algae, fungi, and plants ( Turland et al. 2018) a second step of lectotypification was necessary. The specimen S-R-11224 was chosen as lectotype because it is more representative, and by the presence of a label with the determination of Ekman.

Taxonomic notes: —The species is characterized by its erect habit up to 2 m high, plain leaves or in slightly grooves, glabrous adaxial surface, rarely subglabrous with sparse simple trichomes, subglabrous abaxial surface with sparse stellate trichomes with branches up to 0.5 mm, epicalyx bracts lanceolate to ovate, 0.7–1.4 × 0.15–0.7 cm, and dark pink corolla.

Distribution, habitat and conservation status: —This species occurs in Brazil ( Paraná and Santa Catarina States) ( Figure 6 View FIGURE 6 ), and grows in wetlands, at elevations of 800 to 1400 m, in highland grasslands in ecotone with the Araucaria forests , in the Provincia Paranense ( Cabrera & Willink 1973). With the available records the species presents an EOO of 14,266.859 Km² and an AOO of 44 km ², and can be considered vulnerable by the EOO and Endangered by the AOO. The species suffers impacts with the increasing urbanization of the main places where it inhabits, the metropolitan region of Curitiba, capital of the State of Paraná, Brazil, and also the urban region of the city of São Bento do Sul-SC. Therefore, a continuous decline in its AOO is observed and estimated, as well as the presence of a severely fragmented habitat, also caused by the presence of crops and silviculture. So the species is here considered Endangered (EN), criteria B2[ab (i,ii,iii)].

Representative specimens: — BRAZIL. Paraná. Piraquara, Jardim Holandês , 01 October 1997, J. M. Silva, J. Cordeiro & J. M. Cruz 2031 ( MBM, FLOR) ; São José dos Pinhais, Rio Guamirim , 29 December 1969, G. Hatschbach 22740 ( MBM, CTES) ; Tijucas do Sul, Tabatinga, 05 November 1956, G. Hatschbach 3944 ( MBM). Santa Catarina. Campo Alegre. Fazenda Ernesto Sheide , 900 m, 19 December 1957, Reitz & Klein 5337 ( HBR, CTES). São Bento do Sul , Serra Alta, trilhos do trem, 26°16’33.6”S 49°22’47.9”O, 816 m, 25 October 2018, M. Grings e Paulo Schwirkowski, 1933 ( ICN) GoogleMaps ; Urubici, Cachoeira Véu de Noiva , 21 December 2018, M. Grings 1990 ( ICN) .