Aristolochia gigantea, the Brazilian Dutchman's pipe or giant pelican flower (syn.

This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius.

A. gigantea and other tropical Dutchman's pipe varieties pose a threat to the pipevine swallowtail butterfly.

The butterfly confuses A. gigantea with its native host plant and will lay eggs on it although pipevine swallowtail caterpillars cannot survive on the foliage[2] because the leaves are toxic to the larvae.

[1] In cultivation in the UK - where it must be grown under glass - this plant has gained the Royal Horticultural Society's Award of Garden Merit.