Amphilophium is a genus of flowering plants in the family Bignoniaceae, native to South America. Amphilophium crucigerum (syn. Pithecoctenium crucigerum) has escaped from cultivation elsewhere, and has become an invasive weed in Australia.

Taxonomy: The genus Amphilophium was erected by Kunth in 1818, the type species being Amphilophium paniculatum, transferred from Bignonia. Many other genera have since been synonymized with Amphilophium.

Species: The following species are recognised in the genus Amphilophium:

• Amphilophium arenarium
• Amphilophium aschersonii
• Amphilophium ayaricum
• Amphilophium bauhinioides
• Amphilophium blanchetii
• Amphilophium bracteatum
• Amphilophium buccinatorium
• Amphilophium campinae
• Amphilophium carolinae
• Amphilophium chocoense
• Amphilophium cremersii
• Amphilophium crucigerum
• Amphilophium cuneifolium
• Amphilophium dasytrichum
• Amphilophium dolichoides
• Amphilophium dusenianum
• Amphilophium ecuadorense
• Amphilophium elongatum
• Amphilophium falcatum
• Amphilophium frutescens
• Amphilophium glaziovii
• Amphilophium gnaphalanthum
• Amphilophium granulosum
• Amphilophium lactiflorum
• Amphilophium laeve
• Amphilophium laxiflorum
• Amphilophium lohmanniae
• Amphilophium magnoliifolium
• Amphilophium mansoanum
• Amphilophium monophyllum
• Amphilophium nunezii
• Amphilophium obovatum
• Amphilophium occidentale
• Amphilophium paniculatum
• Amphilophium pannosum
• Amphilophium parkeri
• Amphilophium pauciflorum
• Amphilophium perbracteatum
• Amphilophium pilosum
• Amphilophium porphyrotrichum
• Amphilophium pulverulentum
• Amphilophium racemosum
• Amphilophium reticulatum
• Amphilophium rodriguesii
• Amphilophium sandwithii
• Amphilophium scabriusculum
• Amphilophium stamineum
• Amphilophium steyermarkii
• Amphilophium vauthieri