Agdestis clematidea

Sessé & Moçiño ex de Candolle

Syst. Nat. 1: 543. 1817.

Common names: Rockroot
Illustrated
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

Distribution

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

Discussion

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

None.
... more about "Agdestis clematidea"
Mark A. Nienaber +  and John W. Thieret +
Sessé & Moçiño ex de Candolle +
cordate +
0 cm0 mm <br />0 m <br /> (9 cm90 mm <br />0.09 m <br />) +
ovate;reniform +
0cm;5.5cm +
Rockroot +
Fla. +, Tex. +, Mexico +, Central America +  and native to subtropical and tropical America +
0-30 m +
1-12[-18]-carpellate +
Hammocks, orchards, waste places, ravines +
terminal +  and axillary +
undulate +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering summer–fall. +
britton1904a +
reticulate-veined +
white;greenish white +
persistent +
oblong;ovate or obovate +
unequal +
0.4 cm4 mm <br />0.004 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Illustrated +
0 cm0 mm <br />0 m <br /> (2,500 cm25,000 mm <br />25 m <br />) +
distinct +
Agdestis clematidea +
Agdestis +
species +