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Eupomatia is a genus of three species of plants in the ancient family Eupomatiaceae, and is the sole genus in the family. Eupomatiaceae is recognised by most taxonomists and classified in the plant order Magnoliales. The three described species are shrubs or small trees, native to the rainforests and humid eucalypt forests of eastern Australia and New Guinea. The type species Eupomatia laurina was described in 1814 by Robert Brown.
Plants contain unusual lignans and alkaloids (sampangine, eupolauridine, eupomatidine-1, liriodenine and lanuginosine, antimicrobials and antifungals) such as proanthocyanidins, cyanidin and flavonoids, in particular velutin. Iridoids, flavonols and ellagic acid are absent. Cyanogenesis absent.
Protogynous and autocompatible flowers, with a reduction in selfing through herkogamy, diurnal synchronization of anthesis and the tendency of the same plant to not flower on two consecutive days. Anthesis lasts one or two days, at the height the flower behaves functionally as a female, showing its gynoecium and with open staminodes, while the stamens remain below the flower. The flower later behaves as a male with the intrastaminal staminodes folded inwards hiding the gynoecium and with erect stamens. The staminodes secrete an oily exudate and emit a fruity smell that attracts beetles, particularly of the genus Elleschodes (Curculionidae), that visit the flowers in both phases, in addition the synandria fall to the ground (cantharophily pollination). The fruit is sweet and aromatic and it is dispersed by birds and mammals (zoochory). The fruit is also eaten by humans.
Text excerpted from the Wikipedia article Eupomatia by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
