Cynanchum laeve is a vining perennial herb native to eastern and central U.S. states and Ontario. Common names include sand vine, honeyvine, honeyvine milkweed, bluevine milkweed, climbing milkweed, and smooth swallow-wort.[2] The root system of C. laeve can cause it to be very difficult to eradicate, especially in agricultural fields.[3] It is a larval food of monarch butterflies[4] and milkweed tussock moth larvae.[5]C. laeve can cause eye irritation if touched and can be toxic to humans and livestock if consumed in large quantities.[6]
^1913 illustration from Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 36
Cynanchumlaeve is a vining perennial herb native to eastern and central U.S. states and Ontario. Common names include sand vine, honeyvine, honeyvine...
light green cultivated good source Blue vine Gonolobus laevis syn. Cynanchumlaeve Sunflower Helianthus annuus Jun – Sep golden feral and cultivated Jewelweed...
formerly included Holostemma chilense, syn of Cynanchum chilense Holostemma laeve, syn of Vincetoxicum laeve Holostemma pictum, syn of Graphistemma pictum...
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