Agdestis clematidea

Sessé & Moçiño ex de Candolle

Syst. Nat. 1: 543. 1817.

Common names: Rockroot
Treatment appears in FNA Volume 4. Treatment on page 5.

Stems climbing, to 25 m, pubescent to glabrate. Leaves: petiole 2–5 cm; blade ovate to reniform, to 9 × 5.5 cm, base cordate, apex obtuse to rounded, often mucronate. Panicles 4–15 cm; peduncle 2–10 cm; pedicel 1–10 mm. Flowers: sepals white to greenish white, reticulate-veined, oblong to ovate or obovate, 4–6.5 mm. Cypselas 2.5 mm (perhaps not maturing in se U.S.), crowned by winglike sepals to 6 × 3 mm.

Phenology: Flowering summer–fall.
Habitat: Hammocks, orchards, waste places, ravines
Elevation: 0-30 m


Fla., Tex., Mexico, Central America, native to subtropical and tropical America.


Of this species, N. L. Britton (1904) wrote, “The flowers and inflorescence are wonderfully Clematis-like, greatly resembling those of Clematis Vitalba of Europe and…those of our own Clematis Virginiana. But the most striking thing about the plant is its horrid odor, the flowers being, if anything, more fetid than those of the carrion-flower or skunk-cabbage….”

The root of Agdestis clematidea allegedly can weigh as much as 68 kg and resemble a large boulder.

Lower Taxa

... more about "Agdestis clematidea"
Mark A. Nienaber +  and John W. Thieret +
Sessé & Moçiño ex de Candolle +
Rockroot +
Fla. +, Tex. +, Mexico +, Central America +  and native to subtropical and tropical America. +
0-30 m +
Hammocks, orchards, waste places, ravines +
Flowering summer–fall. +
britton1904a +
Illustrated +
Agdestis clematidea +
Agdestis +
species +