Vangueria is a genus of flowering plants in the family Rubiaceae. The genus is named for , as V. madagascariensis is known in Malagasy.
Distribution The genus contains over 50 species distributed in Africa south of the Sahara with one species occurring in Madagascar (V. madagascariensis). The centre of diversity is in East Africa (Kenya, Tanzania) and they are rare in West Africa.
Bacterial leaf symbiosis Endophytic bacteria are housed in the intercellular space of the leaf mesophyll tissue. The presence of these bacteria can only be microscopically ascertained. The bacteria are identified as Burkholderia, which is a genus that is also found in the leaves of other Rubiaceae species. The hypothesis is that these endophytic bacteria provide chemical protection against insect herbivory.
Gousiekte Several Vangueria species - V. latifolia, V. pygmaea, V. thamnus - are known to cause , a cardiotoxicosis of ruminants characterised by heart failure four to eight weeks after ingestion of certain rubiaceous plants.
Taxonomy The genus was firist described by Antoine Laurent de Jussieu in 1789.Vangueria Juss. Plants of the World Online. Retrieved 10 December 2023.
Species in the former genus Tapiphyllum were sunk into synonymy Vangueria when a 2005 molecular phylogenetic study showed that the type species, Tapiphyllum cinerascens, is more closely related to Vangueria than to Tapiphyllum obtusifolium and Tapiphyllum velutinum, and that the latter two were not distinct from Vangueria.
Species
Vangueria agrestis (Schweinf. ex Hiern.) Lantz Vangueria albosetulosa (Verdc.) Lantz Vangueria apiculata K.Schum. Vangueria bicolor K.Schum. Vangueria bowkeri (Robyns) Lantz Vangueria burnettii (Tennant) Lantz Vangueria burttii (Verdc.) Lantz Vangueria chariensis A.Chev. ex Robyns Vangueria cinerascens (Welw. ex Hiern.) Lantz Vangueria cinnamomea Dinter Vangueria cistifolia (Welw. ex Hiern.) Lantz Vangueria coerulea (Robyns) Lantz Vangueria cyanescens Robyns Vangueria discolor (De Wild.) Lantz Vangueria domatiosa J.E.Burrows Vangueria dryadum S.Moore Vangueria esculenta S.Moore Vangueria ferruginea (Welw.) ined. Vangueria fulva (Robyns) Lantz Vangueria fuscosetulosa (Verdc.) Lantz Vangueria gillettii (Tennant) Lantz Vangueria glabrata K.Schum. Vangueria gossweileri (Robyns) Lantz Vangueria induta (Bullock) Lantz Vangueria infausta Burchell Vangueria kerstingii Robyns Vangueria lasiantha (Sond.) Sond. Vangueria latifolia (Sond.) Sond. Vangueria loranthifolia K.Schum. Vangueria macrocalyx Sond. Vangueria madagascariensis J.F.Gmel. Vangueria micropyren (Verdc.) Lantz Vangueria mollis (Robyns) Lantz Vangueria monteiroi (Oliv.) Lantz Vangueria obtusifolia K.Schum. Vangueria pachyantha (Robyns) Lantz Vangueria pallidiflora (Bullock) Lantz Vangueria parvifolia Sond. Vangueria praecox Verdc. Vangueria proschii Briq Vangueria psammophila (K.Schum.) Lantz Vangueria pygmaea Schltr. Vangueria quarrei (Robyns) Lantz Vangueria randii S.Moore Vangueria rhodesiaca (Tennant) Lantz Vangueria rufescens (E.A.Bruce) Lantz Vangueria schliebenii (Verdc.) Lantz Vangueria schumanniana (Robyns) Lantz Vangueria senegalensis Benth. & Hook.f. ex Hiern Vangueria silvicola O.Lachenaud Vangueria solitariiflora (Verdc.) Lantz Vangueria soutpansbergensis N.Hahn Vangueria thamnus (Robyns) Lantz Vangueria triflora (Robyns) Lantz Vangueria venosa (Hochst.) Sond. Vangueria verticillata (Robyns) Lantz Vangueria vestita (Robyns) ined. Vangueria volkensii K.Schum.
References