Macaranga involucrata (Roxb.) Baill. ex Müll.Arg.

Turner, Ian M., 2022, FROM ACACIA TO ZIZIPHUS: PLANT NAMES COMMEMORATING THE BOTANIST WILLIAM ROXBURGH, Edinburgh Journal of Botany 79 (1911), pp. 1-102 : 66

Macaranga involucrata (Roxb.) Baill. ex Müll.Arg. in Candolle, Prodr. 15(2): 1011 (1866).

– Urtica involucrata Roxb., Fl. Ind. 3: 592 (1832), nom. cons. prop. [non U. involucrata

Sims (1824)] – Urtica involuta Steud., Nomencl. Bot. , ed. 2, 2: 735 (1841). – Macaranga williamroxburghii Chakrab., Ann. Pl. Sci. 8: 3645 (2019), nom. illegit., superfl. – Type: W. Roxburgh s.n. (BM [BM000645881]).

Macaranga williamroxburghii Chakrab. is a superfluous renaming of Urtica involucrata Roxb. , as Steudel’s earlier replacement name, Urtica involuta , could legitimately be transferred to Macaranga . A proposal to conserve Urtica involucrata Roxb. , and hence maintain Macaranga involucrata as the correct name, has been published ( Turner, 2021b).

Macaranga peltata (Roxb.) Müll.Arg., Prodr. 15(2.2): 1010 (1866). – Osyris peltata Roxb., Fl. Ind. 3: 755–756 (1832). – Macaranga roxburghii Wall., J. Agric. Soc. India 1: 14 (1842), nom. illegit., superfl. – Tanarius peltatus (Roxb.) Kuntze, Revis. Gen. Pl. 2: 620 (1891).

– Tanarius roxburghii Kuntze, Revis. Gen. Pl. 2: 620 (1891), nom. illegit., superfl. – Type: India, W. Roxburgh 125 (lectotype BR [BR0000008494009], designated at the first step by Whitmore, Genus Macaranga 203 [2008], and at the second step by Chakrabarty,

Ann. Pl. Sci. 8(10): 3635 [2019]; possible isolectotypes BR [ BR0000008493989 , BR0000008493996 , BR0000008494016 ] ).

Macaranga roxburghii Wall. is a superfluous renaming of Osyris peltata Roxb.

Magnolia pterocarpa Roxb., Pl. Coromandel 3: 62–63, t. 266 (1820). – Liriodendron indicum Spreng., Syst. Veg. , ed. 16, 2: 642 (1825), nom. illegit., superfl. – Type: W. Roxburgh s.n. (lectotype BM [000574745(BM)], designated here).

Talauma roxburghii G.Don, Gen. Hist. 1: 85 (1831). – Type : India, Hortus Botanicus Calcuttensis, N. Wallich s.n. [ EIC 975.2 ] (lectotype K [ K000681437 ], designated here).

Liriodendron grandiflorum Roxb., Fl. Ind. 2: 653 (1832). – Lirianthe grandiflora (Roxb.) Spach, Hist. Nat. Vég 7: 485 (1838). – Magnolia sphenocarpa Wall. ex Steud., Nomencl. Bot. , ed. 2, 2: 55, 90 (1841). – Type: W. Roxburgh s.n. (lectotype BM [000574745(BM)], designated here).

As the descriptions are almost identical, it is clear that Magnolia pterocarpa Roxb. and Liriodendron grandiflorum Roxb. apply to the same species. Presumably Robert Brown changed Roxburgh’s name in the process of editing the Plants of the Coast of Coromandel.

A Roxburgh specimen in BM is here designated lectotype of both names. George Don’s Talauma roxburghii clearly refers to the same species as well. There is a specimen in K labelled with Don’s name, although I think not in his hand. But Don may have seen it, and as there are no other specimens obviously representing original material, it is here designated as lectotype of Don’s name.