Urochloa deflexa (Schumach.) H.Scholz

Urochloa deflexa (Schumach.) H.Scholz View in CoL

Urochloa deflexa (Schumach.) H. Scholz (1990) View in CoL 443. — Panicum deflexum Schumach.(1827) View in CoL 63. — Panicum ramosum View in CoL L. var. deflexum (Schumach.) Peter (1930) 177. — Brachiaria deflexa (Schumach.) C.E.Hubb.ex Robyns (1932) View in CoL 181. — Pseudobrachiaria deflexa (Schumach.) Launert (1970) View in CoL 158. — Lectotype (indirectly designated by Vorontsova 2022): Thonning 390 (lecto C [C10004257]; isolecto C [C10004258]), Ghana.

Panicum regulare Nees (1841) View in CoL 41. — Brachiaria regularis (Nees) Stapf (1919) View in CoL 544. — Lectotype (designated by Clayton & Renvoize 1982): Thonning s.n. (lecto S [S-G-4503]), Ghana.

Panicum nudiglume Hochst. (1844) View in CoL 253. — Panicum petiveri Trin. var. nudiglume (Hochst.) Chiov.(1908) View in CoL 303. — Lectotype (designated here): Kotschy 53 (lecto TUB [ TUB006472 ]; iso B [B 10 01686165, B 10 0168616], BM [BM000923192, BM000923193 ],E [E00200286],HOH [ HOH008973 ,HOH-008974], JE [JE00006104, JE00006105 ], K [K000282210], M [M0103955, M0103956], S [S05-8800], TUB [ TUB006473 , TUB006474 ], W [W1889- 0017077, W18890236404, W19040010284, W19160024302, W191600- 24315]), Ethiopia, Cordofan , 1837–1838.

Panicum petiveri Trin. var. robustissimum Chiov. (1903) 32. — Lectotype (designated here): Pappi 3418 (lecto FT [ FT000203 ]), Ethiopia, Eritrea, Assaorta , Monte Urug, 22 Mar. 1893.

Brachiaria clavuliseta Chiov. (1926) 106. — Lectotype (designated here): Gorini 19 (lecto FT [ FT000202 ];isolecto FT [ FT000201 ], K [K000282209]), Somalia, Chisimaio , 1925.

Brachiaria stapfiana Basappa & Muniy. (1983) 379. — Urochloa stapfiana (Basappa & Muniy.) Ashal. & V.J.Nair (1997) 30. — Type: Bassapa & Muniyamma 2100 (holo CAL; iso BSI, BSJo, MGM, MH), India, Karnataka, Hampi, 20 Sept. 1979.

Distribution — Widely distributed, throughout tropical Africa, from the Cape Verde Islands east to Egypt, south to South Africa and Madagascar, to the Arabian Peninsula, Pakistan, Nepal and India; introduced in Florida ( United States of America).

Nomenclatural notes — The protologue of Panicum deflexum does not mention any specimens, but the work of Schumacher (1827) is based on the collections of Thonning at C. Formely, Clayton & Renvoize (1982) already selected a lectotype, by quoting ‘C, holo’, where the indication ‘holo’ is an implicit lectotypification (see ICN Art. 9.10). However, C holds three sheets of Thonning, one without a number (C10004259) and two with number 390, while the one without number and one of those labelled as ‘390’ originate from the Herbarium of Hornemann (C10004258), and the third originates from the Herbarium of Schumann (C10004257). This indicates not all of them may belong to the same collection and therefore we deem it more appropriate to treat the first as a syntype of the second and third. Vorontsova (2022) rightfully selected one of the sheets as ‘holotype’, which is to be regarded as an implicit lectotypification. There is a fragment at K, only indicating it came from ‘the type’, but because it is unclear from which of the syntypes, we prefer not to take it into consideration.

In the protologue of Panicum regulare Nees (1841) states he saw a specimen in the herbarium of Lehmann. This herbarium was incorporated in that of Stockholm (S) ( Nordenstam 1980) where Clayton & Renvoize probably found a specimen collected by Thonning, which carries the full diagnosis of the protologue in Nees’ hand. They logically denoted it at the ‘holotype’, which in fact was a lectotypification.

The protologue of Panicum nudiglume mentions three syntype collections, Kotschy s.n., Kotschy 53a and Kotschy 53b. The author of the name, Hochstetter, worked at TUB, hence it is logic to select the lectotype from there. Indeed, this herbarium holds two sheets marked 53a and one marked 53b. However, in other herbaria the duplicates lack these additional letters, and it seems best to treat them all as duplicates of the lectotype material at TUB. However, to avoid any future discussion or confusion, we selected one of the 53a sheets as the lectotype.