Climbing with aerial rootlets
A comment and response in the previous post mentioned that poison ivy can grow as a vine. To make that clearer, here’s a picture from January 19, 2012, of two poison ivy vines that had climbed a tree in a wooded part of Great Hills Park. The aerial (as opposed to underground) rootlets that poison ivy uses to attach itself to a tree can be a warning sign to people who might otherwise innocently touch or lean against a tree like this one. The second word in the scientific name Toxicodendron radicans means ‘rooting,’ and now you see why that word was chosen.
© 2012 Steven Schwartzman