5. Lobelia hassleri Zahlbruckner (1907: 445) .

Type:— PARAGUAY. Caaguazú: “In campis paludosis”, Februario 1905, Hassler 8970 (lectotype, designated here: G! in two sheets [00106161], [00106162], isolectotypes: G! [00106160], G! [00106163], GH! [00033303], MICH! [1111406], MPU! [016084], NY! [00547160], P! [P00714441], S! [05-1983], UC! [944585], US! [00344717]) .

Notes: — Zahlbruckner (1907) described Lobelia hassleri based on the specimen Hassler 8970, collected in Caaguazú, Paraguay. Amongst the various syntypes, the sheets housed at G under the numbers [00106161] and [00106162] clearly constitute a single specimen, with complete original labels in Zahlbruckner’s hand and perfectly fitting the original description. Based on Art. 8.2 of ICN (McNeill 2014), these plant fragments are thus considered as a single specimen mounted on two sheets and are here selected as the lectotype.