Croton persimilis Müll.Arg., Linnaea

Turner, Ian M., 2022, FROM ACACIA TO ZIZIPHUS: PLANT NAMES COMMEMORATING THE BOTANIST WILLIAM ROXBURGH, Edinburgh Journal of Botany 79 (1911), pp. 1-102 : 40-42

Croton persimilis Müll.Arg., Linnaea 34: 116 (1865). – Type : Sri Lanka, CP 2114 (lectotype

G-DC [G00312052], designated by Chakrabarty & Balakrishnan, J. Econ. Taxon. Bot. 40(1–2): 39 [2018]).

Croton oblongifolius Roxb., Fl. Ind. 3: 685 (1832), nom. illegit., non C. oblongifolius Delile (1812) , nec C. oblongifolius Sieber ex Spreng. (1826) . – Croton roxburghii N.P.Balakr., Bull. Bot. Surv. India 3: 39 (1962), nom. illegit., non C. roxburghii Wall. (1840) . – Croton virbalae M.R.Almeida, Fl. Maharashtra 4 B: 300 (2003), as ‘virbalaie’. – Type: W. Roxburgh s.n. (lectotype BM [BM00754910], designated by Chakrabarty & Balakrishnan, J. Econ. Taxon. Bot. 40(1–2): 39 [2018]).

Balakrishnan proposed Croton roxburghii as a replacement name for the later homonym Croton oblongifolius Roxb. However , this was itself also a later homonym.

Cryptocoryne retrospiralis (Roxb.) Kunth, Enum. Pl. 3: 12 (1841). – Ambrosina retrospiralis Roxb., Fl. Ind. 3: 492 (1832), as ‘Ambrosinia’. – Type: [unpublished illustration] Icones Roxburghianae 1292 (lectotype K, designated here). Figure 7 .

Ambrosina unilocularis Roxb., Fl. Ind. 3: 493 (1832), as ‘Ambrosinia’. – Ambrosina roxburghiana Voigt, Hort. Suburb. Calcutt. 685 (1845), nom. illegit., superfl., as ‘Ambrosinia’. – Cryptocoryne unilocularis (Roxb.) Schott, Bonplandia (Hannover) 5: 223 (1857). – Cryptocoryne roxburghii Schott, Prodr. Syst. Aroid. 18 (1860), nom. illegit., superfl. – Type: [unpublished illustration] Icones Roxburghianae 245 (lectotype K, designated here).

Voigt renamed Ambrosina unilocularis Roxb. as Ambrosina roxburghiana . The name change was not needed, and the name is therefore illegitimate. Schott objected to the epithet ‘unilocularis’ as the syncarpium is quadriloculate, but this is not legitimate grounds for a name change. Rataj (1975) proposed a Hooker and Thomson specimen from Concan in CAL as lectotype for Ambrosina unilocularis Roxb. , but this is clearly not original material for the name. Therefore, Roxburgh’s drawings for the two names cited above are here designated as lectotypes.

Curcuma roxburghii M.A.Rahman & Yusuf , Bangladesh J. Pl. Taxon. 19(1): 80 (2012). – Type: Bangladesh, Rangamati district , Rangapani, 8 vii 1993, M. Yusuf & M.A. Rahman 803 (holotype BCSIRH).

Cymbopogon citratus (DC.) Stapf, Bull. Misc. Inform. Kew 1906: 322 (1906). – Andropogon citratus DC., Cat. Pl. Horti Monsp. 78 (1813), as ‘citratum’. – Type: Cult. in Horto Monspeliensis (not traced).

Andropogon schoenanthus Roxb., Fl. Ind. 1: 278 (1820), nom. illegit., non A. schoenanthus L. (1753). – Andropogon roxburghii Nees ex Wight & Arn., Cat. Ind. Pl. 100 (1834). – Type: non designatus.

Wight and Walker-Arnott validated a replacement name for Roxburgh’s illegitimate Andropogon schoenanthus . It is a synonym of lemongrass Cymbopogon citratus (DC.) Stapf.

Figures

Figure 7. The lectotype of Ambrosina retrospiralis Roxb., basionym of Cryptocoryne retrospiralis (Roxb.) Kunth. Icones Roxburghianae 1292 in the collection of the Royal Botanic Gardens, Kew. Reproduced with the permission of the Board of Trustees of the Royal Botanic Gardens, Kew.