Monteiroa ptarmicifolia (A.St.-Hilaire & Naudin) Krapovickas (1951:242)

7. Monteiroa ptarmicifolia (A.St.-Hilaire & Naudin) Krapovickas (1951:242) View in CoL . ≡ Malva ptarmicifolia A.St.-Hilaire & Naudin View in CoL in Ann. des Sci. Nat. Bot., sér. 2, 18: 46. 1842. BRAZIL. Rio Grande do Sul. “Brésil, Province de Rio Grande (Herbier Imperial du Brésil n° 1234)”, C. Gaudichaud, 1833 (P barcode 00156878! #) [Sellow? 1234]. Figures 14 View FIGURE 14 and 22 View FIGURE 22 .

Taxonomic notes: — Monteiroa ptarmicifolia is characterized by: erect shrubs up to 3 m high; glabrous or with arachnoid young stems and leaves; leaves plain, not bullate, lanceolate to oblong, crenate-dentate; epicalyx bracts 1–2 mm below calyx, lanceolate or narrowly elliptic, 0.5–1 × 0.1–0.3 cm, glabrous or arachnoid; corolla pink.

Distribution, habitat and conservation status: —This species occurs in Brazil ( Rio Grande do Sul and Santa Catarina States) ( Figure 15 View FIGURE 15 ), and grows in wetlands and margin of rivers mainly of the Provincia Paranense ( Cabrera & Willink 1973), in the highland grasslands in contact with Araucaria forests , with some collections for the Provincia Pampeana, in southern Brazil, at elevations of 10 to 1400 m. With the available records the species presents an EOO of 78,440.176 Km² and an AOO of 96 km ², and is here considered Endangered (EN), by the AOO, and by its habitat severely fragmented and by the continuing decline observed in its area of occupancy and quality of habitat, criteria B2[ab (i, ii, iii?)] ( Andrade et al. 2015, Mapbiomas 2023).

Representative specimens: — BRAZIL. Rio Grande do Sul. Capão do Leão, Horto Botânico Irmão Teodoro Luis , 18 November 1987, J. A. Jarenkow 801 ( CTES) ; Caxias do Sul, Forqueta , WGS 84 29°11’38.35”S 51°16’35.57”O, 740 m, 14 October 2018, M. Grings 1929 ( ICN). Faxinalzinho, Linha Dias, perto de Goio-en, 11 November 2013, R. A. Záchia 6343 ( SMDB) GoogleMaps ; São Francisco de Paula, estrada do Cerrito, WGS 84 UTM 22 J 555384 W 6755981 S, 24 November 2019, M. Grings & I. Buffon 2094 ( MBM). Santa Catarina. Bom Jardim da Serra , 9 Km E de Bom Jardim da Serra , 25 November 1980, A. Krapovickas & R. Vanni 36928 B ( CTES) .