On rare occasions 3 = 5.
“Leaves of three, let it be,” goes an old adage that’s meant to guide people away from the three “leaves” of poison ivy, Toxicodendron radicans. I put “leaves” in quotation marks because, technically speaking, poison ivy has compound leaves, each of which is normally made up of three leaflets; those three leaflets together comprise one (and only one) leaf.
Now for the word normally in that last sentence: a poison ivy leaf almost always produces three leaflets, but once in a rare while it produces five, as you can confirm in today’s photograph taken in Great Hills Park on April 27th. The picture you saw yesterday of a poison ivy vine climbing a rough-barked tree reminded me of my earlier sighting, which I’d meant to report to you but had forgotten about, so here it is now.
In case you’re wondering, the other leaves on this poison ivy plant had their normal complement of three leaflets.
© 2015 Steven Schwartzman