Toxicodendron rydbergii, the western poison ivy[3] or northern poison oak, is a species of Toxicodendron in the cashew family native to North America. As a poison ivy, it can cause …

Western poison ivy (T. rydbergii) is a low-growing shrub (rather than a vine, like its eastern relative, T. radicans) that occurs widely across the western states, Great Plains, and …

2020年5月29日 · Western poison ivy (Toxicodendron rydbergii) can be found in the Upper Peninsula and the northern and western portions of the Lower Peninsula. Western poison ivy …

Toxicodendron rydbergii contains a chemical that in some people causes painful swelling, rashes and eruptions of the outer-skin, thus the common name "Poison Ivy". Importance to Wildlife, …

Eastern poison-ivy dominated the sparsely covered eastern poison-ivy/Cossatot Mountain leafcup (Polymnia cossatotensis) vegetation type on steep, unstable talus slopes on Tom, Blaylock, …

2023年11月13日 · Rydberg's poison ivy [Toxicodendron rydbergii (Small ex Rydberg) Greene]. Rydberg's poison ivy will be generally found west of US 77 highway. The two forms have very …

Mature fruits of both Toxicodendron rydbergii and Toxicodendron radicans often remain on the plants into and sometimes through winter. Named for American botanist Per Axel Rydberg.

This species of poison ivy is strongly shrub form - it never vines at all. In Minnesota where I live, I have never had seen vining form o ...Read More. Check out the largest plant identification …

Toxicodendron rydbergii (Poison Ivy) Anacardiaceae (Sumac Family) Semi-desert, foothills, montane. Streamsides, seeps. Spring. Lower Dolores River Canyon, May 17, 2004. When …

Other: The genus name, “ Toxicodendron ”, means “poison tree” and the species name, “ rydbergii ”, honors Per Axel Rydberg (1860-1931), a plant taxonomist and the first curator of …