7. Bombax marginatum var. arboreum (Chodat) Hassl. in Repert. Spec. Nov. Regni Veg. 8: 70. 1910.

÷ Bombax marginatum f. arboreum Chodat in Bull. Herb. Boissier ser. 2, 5: 72. 1904.

Lectotypus (gathering designated by ROBYNS, 1963; specimen in hoc loco designatum): PARAGUAY. Concepción: “In dumetis prope Rio Apa”, V.1885 -1895, Hassler, E. 410 (G [G00307102]! [lf, fl]) . Isolectotypi: (G [G00307100]! [fl], G [G00307101]! [fl], K! [fl], NY [NY00133529]! [fl], NY [NY00133530]! [fl], P [P06622878]! [fl], P [P0662 2882]! [fl]) .

Syntypi: PARAGUAY. Cordillera: “In rupestribus Cordillera de Altos ”, II.1898 -1899, Hassler, E. 6031 (G [G00077086]! [lf, fl], G [G00094589]! [lf, fl], G [G00094590]! [lf, fl], G [G00094591]! [lf, fl]), LIL [LIL000882] [image]! [fl], MICH [MICH1210020] [image]! [lf, fl], MO [MO309212]! [lf, fl], P [P00634474]! [lf], P [P00634475]! [fl], P [P06622935]! [lf], P [P06622940]! [fl], S [S10-34541]! [lf, fl]).

ROBYNS (1963: 79) designated Hassler 410 as holotype of Pachira marginata f. arborea, and this designation is correctable to lectotype (ICBN-Melbourne, Art. 9.9).

The exact citation of P. marginata f. arborea in ROBYNS (1963: 77) is: “Pa. [ Pachira] marginata f. arborea Chodat et Hassl., loc. cit. [Bull. Herb. Boiss. ser. 2, V], p. 72 (1905)”. In the original publication, CHODAT (1904: 72) mentions in this place: “ Bombax marginatum K. Sch. [...] forma arborea ”. Furthermore P. marginata A. St. -Hil. & al. is the basionym of B. marginatum (A. St.-Hil. & al.) K. Schum. We consider then P. marginata f. arborea in ROBYNS (1963: 77, 79) therefore to be a lapsus calami. We believe that Robyns intended B. marginatum f. arboreum, as did CHODAT (1904: 72), since Robyns’ concept of Pachira included only P. aquatica Aubl. and P. insignis (Sw.) Savigny (ROBYNS, 1963: 233).

Robyns annotated 2 duplicates of Hassler 410 in G ([G 00 307101], [G00307102]) but he did not designate either one of them as the lectotype. In the sense of Art. 9.17 (ICBN- Melbourne) we complete herein Robyns’ typification by narrowing down his selection to the only duplicate with both leaves and flowers as lectotype.

Under B. marginatum var. arboreum, HASSLER (1910: 70) described B. marginatum f. apaense (holotype: Hassler 410) and B. marginatum f. rupestre (holotype: Hassler 6031).