August 22, 2006
Black Swallowwort, Cynanchum louisiae
These numerous spindle-shaped pods, are attached to black swallowwort
vines that are climbing up a small ash tree. Soon the pods will open,
allowing the white-tufted seeds to be distributed the far and wide by
the wind. This very successful dispersal mode and a lack of natural
enemies has made this introduced plant a serious threat at Fresh Pond
Reservation and many other natural areas across Massachusetts.