Description of the genus
Unarmed herbs or small shrubs. Leaves alternate, entire. Inflorescences in terminal or lateral cymes. Flowers actinomorphic or slightly zygomorphic, showy. Calyx ± curved, 10-ribbed and deeply 5-lobed; lobes linear to triangular-lanceolate. Corolla white with a yellow or purple centre or variously coloured; tube long; limb expanded. Stamens 5, arising from the corolla mouth, adnate around the style, exserted. Fruit a capsule.
Worldwide: 23 species from Mexico to Chile, mainly in Argentina
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Other sources of information about Nierembergia:Flora of Zimbabwe
(electronic Plant Information Center): NierembergiaFlora Zambesiaca
web site: NierembergiaGoogle
(Germplasm Resources Information Network) taxonomy for plants report for NierembergiaIPNI
(International Plant Names Index): NierembergiaKew Herbarium catalogue
Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Stefaan Dondeyne 2007-13
Hyde, M.A., Wursten, B.T., Ballings, P. & Dondeyne, S.
. Flora of Mozambique: Genus page: Nierembergia.
http://www.mozambiqueflora.com/speciesdata/genus.php?genus_id=1256, retrieved 21 May 2013