05-25-2009 Toxicodendron rydbergii

poisonIvyThe first European to describe this plant was Captain John Smith in 1609. It was he who coined the name “Poison Ivy.” Although contact often causes a debilitating rash in humans, wildlife and livestock can browse without any ill effects. Considered a ubiquitous weed , it can easily invade sites with moderate amounts of sunlight such as ravines, edges of waterfalls, creekbanks, streambottoms, river terraces, and floodplains.

poisonIvy fullA native, rhizomatous, low shrub. Throughout much of its range, assumes a subshrub growth form, typically less than 3′ tall. However, under favorable site conditions, where plants have remained relatively undisturbed for several decades, individuals sometimes reach heights of 10′ or more.
Stems are somewhat woody, simple or sparsely branched, arising from branched rhizomes.
The Leaves are long-stalked, borne alternately near the summit of the stem and divided into three coarse-toothed leaftlets. “Leaves of three, LET IT BE!”



~ by myVelleity on May 25, 2009.

3 Responses to “05-25-2009 Toxicodendron rydbergii”

  1. very nice shots, love the green and the use of shallow dof.
    thanks again for the correction, i’ve re-uploaded the book

  2. The three leaves make a nice pattern… much nicer looking than it probably should be!
    I’ve never had poison ivy and hope I don’t find some now. 🙂 Fine shots.

  3. You got closer than I would have. I catch it if someone cuts it anywhere close enough for the wind to blow it my way. Terrible condition.

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