Western Poison-Ivy (Toxicodendron rydbergii)
Western Poison-Ivy Species Description
This species is native to North America north of Mexico.
Allergenicity: Western Poison-Ivy (Toxicodendron rydbergii) is a severe allergen.
Pollination: Occurs in following seasons depending on latitude and elevation: Spring to Fall.
Angiosperm - Flowering Dicot: Plants in this group have two embryonic leaves (dicotyledons). Examples of dicotyledons are beans, buttercups, oaks, sunflowers, etc.
Tree: A large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age).
Shrub: A woody plant smaller than a tree, and usually with several stems from the same root.
Forb: A broad-leaved herb other than a grass, especially one growing in a field, prairie, or meadow.
Weed: Any plant growing in cultivated ground to the injury of the crop or desired vegetation, or to the disfigurement of the place; an unsightly, useless, or injurious plant.
Perennial: Living for many years.
Wetland Plant: Plants growing in aquatic or wetland habitats. These include all known floating, submerged, and emergent taxa, plus those that are found in permanently or seasonally wet habitats.
Woody Stem: Non-herbaceous. Lignified.
Herbaceous Stem: Not woody, lacking lignified tissues.
Western Poison-Ivy Species Usage
Related Links
More Western Poison-Ivy (Toxicodendron rydbergii) imagesby Jessie M. Harris from BONAP
