22. Begonia hirtella Link [§ Ephemera], Enum. Hort. Berol. Alt. 2: 396 (1822).

– Type: Brazilia, Sellow F. 2192 (neotype B [B100243031], designated by Kollmann [2020]; isoneotypes B [2 sheets]).

Additional literature. Kiew (2005) [description, line drawing and photographic plate]; Girmansyah (2014) [distribution map]; Kollmann (2020) [lectotypification].

Distribution. Native to South America (Bolivia, South Brazil, Southeast Brazil, Colombia, Jamaica, Peru, Venezuela). Naturalised in many areas in Asia, including Sri Lanka, Taiwan, Malaysia and Indonesia (Bali, Java, Sulawesi, Sumatra), as well as in Australia. In Sulawesi, recorded from the North and West Provinces.

Habitat. This species is often found naturalised in strongly disturbed vegetation, including forest borders, home gardens, plantations, and other open areas.

Proposed IUCN conservation category. Least Concern (LC). Begonia hirtella is an introduced species from the Neotropics. The species has been naturalised in many regions in Indonesia.

Additional specimens examined. INDONESIA. Sulawesi. Northern arm of Sulawesi. Eastern North Sulawesi: Kali Waterfall, 31 i 2019, W.H. Ardi WI394 (BO) ; Tomohon, Masarang, 2 ii 2019, W.H. Ardi WI396 (BO) ; Minahasa, Tumpaan–Kongkoan Road divide, 5 ii 2019, W.H. Ardi WI411 (BO) .

West Sulawesi Province: Mamasa, Gunung Mambulilin, 9 v 2009, D.C. Thomas & W.H. Ardi DCT09-124 (BO) .