Urochloa platynota (K.Schum.) Pilg.

Oulo, M., Zon, A. P. M. van der & Sosef, M. S. M., 2023, New combinations in and typification of tropical African species of Urochloa (incl. Brachiaria) (Poaceae), Blumea 68 (2), pp. 73-84 : 79

Urochloa platynota (K.Schum.) Pilg.

Urochloa platynota (K.Schum.) Pilg. (1940) 35. — Panicum platynotum K.Schum. (1895) 101. — Brachiaria platynota (K.Schum.) Robyns (1932) 174. — Lectotype (designated here): Stuhlmann 1095 (lecto K [K000282220]; isolecto BR [BR0000008756596], US [ US 00902280]), Tanzania, Bukoba, 19 Nov. 1890.

Panicum bifalcigerum Stapf (1906) 531. — Urochloa bifalcigera (Stapf) Stapf (1920) 588. — Lectotype (designated here): Dawe 826 (lecto K [K000282222]; isolecto K [K000282221]), Uganda, Bunyoro District, Unyoro, 1905.

Panicum geometra Chiov.(1919) 64. — Lectotype (designated here): Bovone 10 (lecto TO), Catanga (= Democratic Republic of the Congo), Ditunguru, 25 Feb. 1914.

Distribution — Eastern part of the Democratic Republic of the Congo, Rwanda, Burundi, Uganda, Kenya, Tanzania and Zambia.

Nomenclatural notes — The original material of Panicum platynotum stored at B could not be traced, and was most likely lost during the WWII fire. From amongst the three remaining duplicates we have chosen the richest material, present at K, as the lectotype.

At K, there are two sheets of the type material of Panicum bifalcigerum, Dawe 826. One of them (K000282222) has a more complete plant and carries an original label. The second (K000282221) is less complete, carries a less elaborate label, and also holds a drawing of a different collection (Powell 15), which might be confusing. For these reasons, the first, was chosen as the lectotype.

The protologue of Panicum geometra indicates the type is Bovone 14. However, this sheet represents the type of Isachne margaritifera Chiov. (= Panicum margaritiferum (Chiov.) Robyns ). It seems Chiovenda (1919) has made an error, citing the same specimen below two species, but in his plant list following the article (p. 77) he cites another and probably the correct specimen, Bovone 10, for Panicum geometra , which is located at TO.