Goniothalamus macranthus (Kurz) Boerl.

Bera, Sukdeb & Karthigeyan, Kaliyamurthy, 2025, Typification of the names Goniothalamus macranthus (Kurz) Boerl. and Mezzettia curtisii King (Annonaceae), Adansonia (3) 47 (19), pp. 327-331 : 328

Goniothalamus macranthus (Kurz) Boerl.

( Fig. 1)

Icones Bogorienses, fascicle II, 1: 137 ( Boerlage 1899). — Basionym: Melodorum macranthum Kurz , Journal of the Asiatic Society of Bengal, part I (Natural History & c.) 41: 291 ( Kurz 1872).

TYPE SPECIMENS. — India • Andaman & Nicobar Islands , South Andaman; S. Kurz s.n.; lectotype: CAL[ CAL0000004545 !], here designated ( Fig. 1); isolectotype: CAL (acc. no. 13892!) .

TYPIFICATION REMARKS

Willhelm Sulpiz Kurz (1834-1878), Curator of the Herbarium, Royal Botanical Gardens, Calcutta, conducted an expedition to the Andaman Islands from April to July 1866 to collect plant specimens for the preparation of the ‘ Flora of the Andaman Islands ’. Kurz had first suggested the name Unona macrantha Kurz ( nom. nud.) in his ‘ Report on the Forests of the Andaman Islands ’ (appendix B. I) dated 1867 (report could not be traced) as cited by King (1893) and Merrill (1919). Kurz (1870) again introduced another invalid name Pyramidanthe macrantha Kurz ( nom. nud.) in his report, titled ‘ Report on the Vegetation of the Andaman Islands ’ Finally, he validly published the name Melodorum macranthum Kurz from his collection in ‘Andamans’ in Journal of the Asiatic Society of Bengal, Part I ( Kurz 1872: 291).

Initially, only one specimen ( CAL 0000004545) was found in the type collections at CAL, which Turner (2018) treated as the holotype, citing it as ‘ India, Andaman Islands, South Andaman, S. Kurz s.n. ( holotype CAL [ CAL 0000004545])’. However, an annotation by Debika Das ( 06.10.1966), indicates that this specimen was also considered a lectotype of Goniothalamus macranthus (Kurz) Boerl. , although it was not validly published. A further search in the general collections at CAL revealed a duplicate specimen (accession number 13892) collected by S. Kurz from South Andaman, with an original label bearing Kurz’s handwriting with the name ‘ Unona macrantha Kurz’ and the name ‘ Melodorum macranthum Kurz’ on the sheet. According to the protologue, this specimen also qualifies as original material.Therefore, both specimens at CAL (CAL0000004545 and CAL acc. no. 13892) are considered syntypes, necessitating lectotypification. In accordance with Art. 9.12 of ICN ( Turland et al. 2018), the well-preserved flowering specimen CAL0000004545 ( Fig. 1) is hereby designated as the lectotype of M. macranthum Kurz.