Monographs Details: Lophanthera
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part XI. Mem. New York Bot. Gard. 32: 1-391.
Description:Genus Description - Shrubs or trees, the stems often containing white latex, the leaves bearing glands on the petiole or lamina or both; stipules intra- and slightly epipetiolar, 2/3 to completely connate. Inflorescence terminal (rarely axillary in L. spruceana), a thyrse composed of few-flowered cincinni or dichasia or a pseudoraceme, the bracts and bracteoles persistent, 1 or both bracteoles usually bearing a large gland. Petals entire or at most minutely denticulate, deciduous, the posterior petal moderately to strongly differentiated from the other 4. Stamens 10, ± in 1 whorl, the filaments distinct or slightly connate basally, glabrous, those opposite the sepals longer than those opposite the petals; anthers alike, glabrous, deciduous, 4-locular, the outer locules bearing dark longitudinal wings, the connective shorter than the locules; pollen tricolporate. Receptacle glabrous or with a row of short, basifixed hairs between filaments and ovary. Ovary of 3 uniovulate carpels, the carpels laterally somewhat to quite free but connate along a narrow to broad central axis; styles 3, apical or subapical, inbent in bud, subulate with minute apical stigmas, glabrous, often persistent in fruit. Fruit schizocarpic, breaking apart into 3 (or fewer due to abortion) dry, unwinged, 1-seeded cocci, the mericarps indehiscent or slightly dehiscent along the keel but not enough so to release the spheroid seed.
Discussion:Type. Lophanthera longifolia (H.B.K.) Grisebach.
Lophanthera is a lowland genus of four species, three of which occur in or near Guayana.