Urochloa xantholeuca (Hack. ex Schinz) H.Scholz

Urochloa xantholeuca (Hack. ex Schinz) H.Scholz View in CoL

Urochloa xantholeuca (Hack. ex Schinz) H. Scholz (1990) View in CoL 443. — Panicum xantholeucum Hack. ex Schinz (1888) View in CoL 141. — Brachiaria xantholeuca (Hack. ex Schinz) Stapf (1919) View in CoL 541. — Lectotype (designated here): Schinz 639 (lecto K [K0002821967] (left hand specimen on sheet);iso US? [ US 00140094], W? [W 1916-0023475]), Namibia, Olukunda, Jan. 1886.

Panicum distichophylloides Mez (1904) View in CoL 137. — Lectotype (designated by Scholz 1978): Barter 1367 (lecto B [B 10 0167762]), Nigeria, Nupe, 1857–1859.

Panicum pubifolium Mez (1904) View in CoL 137, nom. illeg., non Nash (1899). — Brachiaria pubifolia (Mez) Stapf (1919) View in CoL 549. — Brachiaria ukambensis Henrard (1940) View in CoL 436. — Lectotype (designated here): Hildebrandt 2665 (lecto B [B 10 0168702]; isolecto BM [BM000923198], JE [JE00007247], K [K000282054], L [L0819904], US [ US 00139910]), Kenya, Machakos / Kitui Districts, Ukamba (= Ukambani), Apr. 1877.

Panicum anisotrichum Mez (1917) View in CoL 70. — Type: Lécard 118 (B, lost), Mali.

Distribution — From Mauritius to Sudan and Ethiopia, and in East Africa from the Democratic Republic of the Congo, Rwanda, Burundi and Uganda south to Mozambique, also in Saudi Arabia.

Nomenclatural notes — Clayton & Renvoize (1982) have chosen the K duplicate of Schinz 639 as the isotype of the name Panicum xantholeucum , which should be considered as the assignment of an isolectotype (ICN Art. 9.10; Turland et al. 2018) . With the original material at B lost, it seemed best to designate the K specimen as the lectotype.

According to Scholz (1978), duplicates of the type of Panicum distichophylloides , at least the one at K, do not belong to the same species.

The type of Panicum anisotrichum was destroyed at B during the WWII fire. So far, no duplicates have been located, but since Lécard material was distributed to a fair number of herbaria, there could still be duplicates elsewhere. For this reason, we refrained from selecting a neotype.