Meiogyne

Meiogyne is a genus of flowering plants with 38 species belonging to the family Annonaceae. It is native from southwestern India and Southeast Asia to Australia and the southwestern Pacific. The type species is Meiogyne virgata.
Meiogyne is distinguished by two morphological characters. The innermost whorl of stamens possesses elongated connectives. Most species also produce warty or corrugated outgrowths on the inner surface of the inner petals.

Pollination

The inner petal outgrowths on the inner petals serve as food bodies for nitidulid, curculionid and staphylinid beetle pollinators in Meiogyne cylindrocarpa, Meiogyne stenopetala and Meiogyne trichocarpa.
Several Meiogyne species possess highly unusual pollination systems. The species Meiogyne hainanensis exhibits a three-way mutualistic relationship. Ascomycete fungi, such as Fusarium, Penicillium and Cladosporium grow on the inner petal outgrowth. The staphylinid and monotomid beetles pollinate the flower and lay eggs on the inner petal outgrowth. Once the eggs hatch, the larvae feed on the fungi.
The Australian species Meiogyne heteropetala imitates aboveground leaf litter and deceives erotylid beetles to achieve pollination.

Species

Plants of the World Online includes 38 species, as follows:

Meiogyne amicorum
Meiogyne amygdalina
Meiogyne anomalocarpa
Meiogyne arunachalensis
Meiogyne baillonii
Meiogyne beccarii
Meiogyne bidwillii
Meiogyne caudata
Meiogyne chiangraiensis
Meiogyne cylindrocarpa
Meiogyne dumetosa
Meiogyne gardneri
Meiogyne glabra
Meiogyne habrotricha
Meiogyne hainanensis
Meiogyne heteropetala
Meiogyne hirsuta
Meiogyne insularis
Meiogyne kanthanensis
Meiogyne laddiana
Meiogyne lecardii
Meiogyne leptoneura
Meiogyne maxiflora
Meiogyne microflora
Meiogyne mindorensis
Meiogyne monosperma
Meiogyne oligocarpa
Meiogyne pannosa
Meiogyne papuana
Meiogyne punctulata
Meiogyne ramarowii
Meiogyne rubra
Meiogyne stenopetala
Meiogyne subsessilis
Meiogyne trichocarpa
Meiogyne verrucosa
Meiogyne vietnamica
''Meiogyne virgata''