Cayaponia americana

(Plumier ex Lamarck) Cogniaux in A. L. P. P. de Candolle and C. de Candolle

in A. L. P. P. de Candolle and C. de Candolle, Monogr. Phan. 3: 785. 1881

Common names: American melonleaf
Synonyms: Cayaponia americana var. angustiloba Cogniaux C. americana var. subintegrifolia Cogniaux
Basionyms: Bryonia americana Plumier ex Lamarck
Treatment appears in FNA Volume 6. Treatment on page 47. Mentioned on page 48.
Vines herbaceous. Stems sulcate, glabrous; tendrils unbranched. Leaves: petiole 1–5 cm, glabrous; blade ovate to deltate or pentagonal, unlobed or shallowly to deeply 3–5-lobed, 5–14 × 5–13 cm, terminal lobe oblong-lanceolate, broadest at base, lateral lobes often sublobed, base cordate to truncate or rounded, margins remotely serrulate or denticulate, surfaces hirsute-hispidulous abaxially (not white-sericeous), pustulate-scabrous adaxially. Flowers: sepals deltate to triangular, 1–2 mm; petals pale green to whitish, corolla 6–10 mm; pistillate flowers solitary, axillary, or 3–5 on short racemoid branches, staminate flowers solitary, axillary. Fruits usually 1, axillary, or 3–5 on racemoid branches, orange to golden brown, short ellipsoid-cylindric, 1.5–2 cm; peduncle 8–15(–30) mm. Seeds usually 3, 10 mm.

Phenology: Flowering May–Aug.
Habitat: Rockland hammocks, hammock edges and clearings
Elevation: 0–20 m


Cayaponia americana is known in the flora area only from Miami-Dade County. The leaf blades are darker and thicker than those of C. quinqueloba, and peduncle length is greater in C. americana.



Lower Taxa

No lower taxa listed.