Selected images for shallow-wort (Cynanchum spp. )
Several species of swallow-worts are herbaceous, perennial vines that invade natural areas in northeastern United States. Leaves are opposite, dark green, oval, and shiny with entire margins. Flowers occur in clusters and dark purple in color. Fruit are pods, similar to milkweed pods, that are slender and split to reveal small seeds with tufts of white hair. The hair allows the seeds to be readily dispersed by seeds. Swallow-worts invade a wide varierty of habitats including old fields, open woodlands, pastures, roadsides, and floodplains. It can rapidly overgrow native understory vegetation and small shrubs, forming dense mats which smother and kill other vegetation. Swallow-worts are native to Europe and were first introduced in the United States in the late 1800s as ornamentals.
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0580010 shallow-wort Cynanchum spp. Flower(s) Richard A. Casagrande |
0580011 shallow-wort Cynanchum spp. Richard A. Casagrande |
1237104 shallow-wort Cynanchum spp. Flower(s) Leslie J. Mehrhoff |
0580009 shallow-wort Cynanchum spp. Plant(s) Heather Faubert |
