papilionaceous

[ puh-pil-ee-uh-ney-shuh s ]

/ pəˌpɪl i əˈneɪ ʃəs /

having an irregular corolla shaped somewhat like a butterfly, as the pea and other leguminous plants.

belonging to the family Papilionaceae (Fabaceae), that is often included as part of the Leguminosae.

Origin of papilionaceous

1660–70; < Latin pāpiliōn- (stem of pāpiliō) butterfly + -aceous

Giring landak (Crotalaria retusa) is a papilionaceous flower resembling the lupin, yellow, and tinged at the extremities with red.

The History of Sumatra |William Marsden
The flowers are papilionaceous, of a purple colour and arranged in panicles.

Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4 |Various
A central dorsal ridge, like the keel of a boat; the two anterior united petals of a papilionaceous flower.

The Manual of the Botany of the Northern United States |Asa Gray
The names of the five petals of the papilionaceous corolla are curiously incongruous.

The Elements of Botany |Asa Gray

Astragalus, a genus of papilionaceous plants, herbaceous or shrubby, and often spiny.

The New Gresham Encyclopedia. Vol. 1 Part 2 |Various