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Honeyvine milkweed

Also known as: sandvine, climbing milkweed

Cynanchum laeve (Michx.) Pers.

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Honeyvine milkweed flowers
Honeyvine milkweed
Honeyvine milkweed
Honeyvine milkweed pod
Honeyvine milkweed leaves
Honeyvine milkweed flowers
Honeyvine milkweed leaf
Honeyvine milkweed leaf and inflorescence
Honeyvine milkweed
Honeyvine milkweed
Honeyvine milkweed
Honeyvine milkweed flowers

Morphology

Stem
Vine, slender, twining, trailing or climbing on other plants and trees, simple or branched, glabrous or with lines of pubescence; sap milky, sticky.
Leaves
Opposite, simple, triangular to ovate, 1 to 5 inches long, 1 to 4 inches wide, glabrous; margins entire; tip pointed; base heart-shaped; stalk 1/2 to 3 inches long.
Inflorescence
Cymes, few to numerous, 5- to 40-flowered, in leaf axils; stalks stout, up to 2 inches long.
Flower
Calyx lobes lanceolate, green or purplish; corolla fragrant, white to cream, up to 1/45 inch long; lobes 5, petal-like, oblong to lance-oblong.
Fruit
Pod, narrowly lanceolate or spindle-shaped, 3 to 6 inches long, .6 to 1.2 inch thick, minutely hairy to glabrous, tubercles absent; seeds many, ovate, flattened, pale brown, tufted with white silky hairs.

Ecology

Habitat
Waste areas, disturbed sites, edges of woods, stream banks, gardens, cultivated fields, and roadsides; all soil types but often in calcareous soils.
Distribution
East 2/3 of Kansas.

Practical Information

Toxicity
Related African and Australian species are toxic to livestock. North American species are not generally considered a problem.

Additional Notes

Comments

Honeyvine milkweed can be a nuisance weed in no-tilled row crops. It has an extensive root system that diverts moisture and will lower crop yields. It can be dificult to eradicate. The seeds are wind dispersed.

Quick Facts
Plant Type
Wildflower
Family
Asclepiadaceae - Milkweed Family
Life Span
Perennial
Height
Trailing vine 6 feet or longer
Last Updated
2007-11-12
Color Groups
White, Green & Greenish White Wildflowers
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: June, July, August