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Issue: Vol. 646 No. 3: 6 May 2024
Type: Article
Published: 2024-05-06
DOI: 10.11646/phytotaxa.646.3.2
Page range: 230-264
Abstract views: 38
PDF downloaded: 3

Old World species of Trichanthecium (Poaceae: Panicoideae: Paniceae) including a new species from the Democratic Republic of Congo

Instituto de Botánica Darwinion, ANCEFN–CONICET, Labardén 200, B1642HYD San Isidro, Buenos Aires, Argentina
Instituto de Botánica Darwinion, ANCEFN–CONICET, Labardén 200, B1642HYD San Isidro, Buenos Aires, Argentina
Instituto de Botánica Darwinion, ANCEFN–CONICET, Labardén 200, B1642HYD San Isidro, Buenos Aires, Argentina
Instituto de Botánica Darwinion, ANCEFN–CONICET, Labardén 200, B1642HYD San Isidro, Buenos Aires, Argentina
Panicum Trichanthecium Taxonomy Old World Grasses Monocots

Abstract

Studies of African material of the tribe Paniceae (Poaceae) resulted in the transfer of 12 species from Panicum, the description of a new species, and the conclusion that the genus Trichanthecium now consists of 52 species. The new Trichanthecium delimitation was confirmed by phylogenetic studies based on chloroplast ndhF and rbcL sequences. Morphological and anatomical characters are discussed within their pylogenetic context. A new species is described: T. marunguensis. Lectotypes are designated for Panicum aequinerve, P. calvum, P. chionachne, P. hochstetteri var. glaberrimum, P. inaequilatum, P. lepidum, P. mokaense, and P. wiehei. The following new combinations are proposed: T. acrotrichum, T. aequinerve, T. calvum, T. chionachne, T. delicatulum, T. eickii, T. hochstetteri, T. inaequilatum, T. perrieri, T. pusillum, T. striatissimum, and T. wiehei. Full synonymies, descriptions, distribution and habitat information, citation of all specimens and a key to the Old World species of the genus are provided; seven species are illustrated.

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