THE LOGANIACEAE of AFRICA XIV a Revision of Nuxia Lam
582.935.4:581.4/.S +581.9(6) MEDEDELINGEN LANDBOUWHOGESCHOOL WAGENINGEN • NEDERLAND • 75-8 (1975) THE LOGANIACEAE OF AFRICA XIV A revision ofNuxi a Lam. A. J. M. LEEUWENBERG Laboratory of Plant Taxonomy andPlant Geography, Agricultural University, Wageningen, The Netherlands (Received 24-111-1975) Published 19-VIII197 5 INTRODUCTION The present publication is a revision on a monographic basis of the genus Nuxia. The genus is restricted to Africa where the present author had theop portunity to study the most variable species, N. congesta, in the field in two dif ferent countries, viz. Cameroun and Ivory Coast. Fortunately most herbarium specimens proved to be well preserved and richly flowering or fruiting. HISTORY OF THE GENUS LA.MA.RCK (1791) founded the genus Nuxia on the basis of a single species, N.verticillata. PERSOON (1805) placed it in LINNAEUS'S Tetrandria monogynia, afterwards RAFINESQUE (1820) near Rondeletia in the Ixorineae of the Rubia- ceae, then REICHENBACH (1828) gave it a place in the Verbenaceae. Meanwhile R. BROWN (1814) named the second species N. congesta which was discovered in Ethiopia and was described only in 1838b y FRESENIUS. BENTHAM (1836) moved Nuxia to thetrib e Buddlejeae of the Scrophulariaceae and added some more species. Only one of them, however, N.floribunda, is maintained here in this genus. All the others belong to Buddleja according to, e.g., Miss I.C . VERDOORN (1958) andth epresen t author. BENTHAM was followed by MEISNER (1840), ENDLICHER (1841), REICHENBACH (1841), and KUNTH (1846), placing Nuxia there. Independently from BENTHAM, HOCHSTETTER (1843) described the new genus Lachnopylis in theLoganiaceae, based on two species, L.
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