Poison ivy is a plant that has some discrete features that make it easily identifiable . One of the most noteworthy features of poisonous substance ivy is its alternate compound leaf . Unlike many other plants that have diametrical leaves , poison ivy has leaves that alternate along the stem . This means that each leaf is positioned one after the other , rather than directly across from each other .

The chemical compound leaf of poisonous substance ivy consist of three booklet per leaf . Each leaflet is attached to a central shuck , and they are put in a pattern that resembles a hand with three fingers . This unequalled transcription of leaflets is a primal feature of poison ivy and can help differentiate it from other plant .

The margins , or edges , of the pamphlet can vary in appearance . They can be toothed , lobate , or solely legato . This means that the edges of the leaflets may have low serration , shallow indentations , or be all matted . The mien of erose or lob margins can further aid in distinguish toxicant ivy , as many other flora have smooth foliage margins .

In term of shape , poison ivy leaflets can vary , although the most rough-cut physique is egg - shaped . The leaflet can also be oval , lanceolate ( long and minute ) , or even irregularly work . This variation in leaf shape add to the diversity of poison ivy ’s appearance and makes it adaptable to dissimilar environs .

It is important to note that poisonous substance common ivy can exhibit different features depending on the years of the plant and environmental conditions . untried toxicant Hedera helix plants may have more lobate leaflets , while mature plant often have smoother edges . Additionally , poison common ivy leaves can change color throughout the year , grade from greenish in the fountain and summer to vibrant red , orange , or yellow-bellied in the crepuscle .

Having personally meet poison English ivy while working in my own garden , I can testify to the grandness of being able-bodied to distinguish its special features . One summertime , I was clearing out a spell of overgrown vegetation and unknowingly add up into contact with poison ivy . It was n’t until the trace day that I noticed the telltale signs of a rash developing on my peel . Reflecting on this experience , I realized the significance of being able-bodied to recognize the distinct characteristic of toxicant English ivy to avoid any further encounters .

To summarize , the particular features of poison Hedera helix include its alternate compound leaf with three leaflet per leaf , notched , lobed , or entire leafage border , and a variety of leaflet shape , most usually egg - shaped . These features , along with the plant ’s power to interchange color throughout the year , make poison ivy a alone and well identifiable industrial plant .

Caroline Bates