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Pentalinon luteum
Wild Allamanda
Hammock Viperstail
Florida native
This vine of south Florida pinelands, mangroves and coastal hammocks is also found in the West Indies.
The 5 cm (2 in.) wide trumpet shaped flowers usually bloom one at a time from April through September and can be axillary or terminal. Pentalinon luteum flowers have narrowly lanceolate calyx lobes and appendages on the tips of the anters that help differentiate this species from the similar Angadenia berteri. The glossy, revolute leaves are opposite, 2.5 - 7.6 cm (1 - 3 in.) long and 1.2 - 2.5 cm (1/2 - 1 in) wide. The vine grows up to about 3 meters (10 ft.) in length.
Like many members of the dogbane family, the leaves and flowers of this plant are poisonous and the sap can be an irritant to the eyes and skin.
Pentalinon luteum is a member of the Apocynaceae - Dogbane family.
Atlas of Florida Vascular Plants (Institute for Systemic Botany) profile for this species
USDA Plant Profile for this species
Date record last modified: Aug 07, 2016
