Common Name:
black
swallowwort
Common Name Synonyms:
climbing milkweed, dog-strangle vine
Scientific Name:
Cynanchum nigrum
Scientific Name Synonyms:
Vincetoxicum nigrum, Cynanchum louiseae
Family Name:
Asclepiadaceae
-
Milkweed Family
Life Cycle
introduced perennial, reproducing by seed
Stems
unbranched, viney in nature, climbing or sprawling
Leaves
opposite, ovate to broadly lanceolate, entire, somewhat shiny, very short petioles
Flowers
5-petaled, dark purple to almost black, petals triangular with short white hairs; axillary clusters
Seedpods
green, long, slender, pointed, light brown when mature; seed flat with tuft of fine hairs
