Célestin Alfred Cogniaux (7 April 1841 – 15 April 1916) was a Belgian botanist. Amongst other plants, the genus '' Neocogniauxia'' of orchids is named after him. In 1916 his enormous private herbarium was acquired by the National Botanic Garden of Belgium.

Publications

* De Saldanha da Gama, J., Cogniaux, A. ''Bouquet de Mélastomacées brésiliennes dédiées a Sa Majesté Dom Pedro II empereur du Brésil''. A. Remacle, 1887 Verviers. * Cogniaux, A., ''Melastomaceae''. G. Masson, Paris, 1891 * Cogniaux, Alfredus, ''Orchidaceae''. Vol. III, part IV, V and VI of ''

Flora Brasiliensis ''Flora Brasiliensis'' is a book published between 1840 and 1906 by the editors Carl Friedrich Philipp von Martius, August Wilhelm Eichler, Ignatz Urban and many others. It contains taxonomic treatments of 22,767 species, mostly Brazilian angiospe ...

''. Lipsiae, Frid. Fleischer, 1893–1906 * Linden, L., Cogniaux, A. & Grignan, G., ''Les orchidées exotiques et leur culture en Europe''. (Bruxelles; Paris. chez l'auteur. Octave Doin, 1894. * Cogniaux, A., Goossens, A.: ''Dictionnaire Iconographique des Orchidees''; 2 vol. 1896–1907. Perthes en Gâtinais (France), Institut des Jardins. 1990 * Cogniaux, A., Harms, H. ''Cucurbitaceae-Cucurbiteae-Cucumerinae'' (2 vols.) W. Engelmann, Leipzig,1924.

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* * 1841 births 1916 deaths 19th-century Belgian botanists 20th-century Belgian botanists {{Belgium-botanist-stub