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Genus

Toxicodendron

Called “Poison Ivy” in GBIF

Toxicodendron is a genus of flowering plants in the sumac family, Anacardiaceae. It contains trees, shrubs and woody vines, including poison ivy, poison oak, and the lacquer tree. The best-known members of the genus in North America are eastern poison ivy (T. radicans) and western poison oak (T. diversilobum), both ubiquitous throughout much of their respective region.

From Wikipedia, licensed under CC BY-SA 4.0

34
accepted species in GBIF
Source: GBIF
3
plants on Plant News
14
research articles
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Plants in this genus

3 plants

Research on Toxicodendron

14 articles
iNaturalist → · observation

Verified poison oak sighting logged in LA County trails

If you hike or garden near chaparral and oak woodlands in Southern California, knowing exactly wh...

iNaturalist → · observation

Poison oak confirmed along popular El Dorado Hills hiking trail

If you hike, bike, or let your dog off-leash on the Browns Ravine Trail, this sighting marks exac...

iNaturalist → · observation

Poison oak confirmed growing along a popular Bay Area hiking trail

Knowing exactly where poison oak grows along a trail you hike lets you spot its shiny three-leaf ...

What science is finding about Toxicodendron

Every article on Plant News that mentions a member of this genus, newest first.

Poison oak confirmed along popular El Dorado Hills hiking trail

If you hike, bike, or let your dog off-leash on the Browns Ravine Trail, this sighting marks exactly where the oily,...

Pacific poison oak native-plants / urban-ecology

Poison oak confirmed growing along a popular Bay Area hiking trail

Knowing exactly where poison oak grows along a trail you hike lets you spot its shiny three-leaf clusters before your ankles...

Pacific poison oak native-plants / urban-ecology

Western poison ivy confirmed in Emily through community observation

Poison ivy grows along trails, woodland edges, and park borders you may already walk through, and knowing it's actively...

Western poison ivy citizen-science / native-plants

Trending: eastern poison ivy (Toxicodendron radicans) — 697 observations this week

Knowing what poison ivy looks like right now — shiny, three-leafed, and often climbing fences or trail edges — can save you a...

Eastern Poison Ivy citizen-science / native-plants

Trending: eastern poison ivy (Toxicodendron radicans) — 843 observations this week

Poison ivy is actively leafing out right now along the trail edges, fence lines, and woodland borders where you're most likely...

Eastern Poison Ivy citizen-science / phenology

Trending: eastern poison ivy (Toxicodendron radicans) — 899 observations this week

Poison ivy is actively leafing out right now along trail edges, fence lines, and woodland borders — knowing its three-leaflet...

Eastern Poison Ivy phenology / native-plants

Trending: eastern poison ivy (Toxicodendron radicans) — 923 observations this week

Poison ivy is hitting peak urushiol potency right now — the same week crowds are heading onto trails — and being able to...

Eastern Poison Ivy phenology / urban-ecology

Trending: eastern poison ivy (Toxicodendron radicans) — 1019 observations this week

Knowing what poison ivy looks like in its current spring growth form — before leaves fully unfurl and the classic...

Eastern Poison Ivy citizen-science / invasive-species

Trending: eastern poison ivy (Toxicodendron radicans) — 941 observations this week

Poison ivy is probably already growing along the edges of your yard, favorite hiking trail, or neighborhood park right now —...

Eastern Poison Ivy invasive-species / urban-ecology

Trending: eastern poison ivy (Toxicodendron radicans) — 2593 observations this week

Poison ivy is actively spreading into backyards, trail edges, and parks right now — knowing what it looks like at this stage...

Eastern Poison Ivy invasive-species / urban-ecology

Trending: eastern poison ivy (Toxicodendron radicans) — 1515 observations this week

Poison ivy is probably already growing along the edges of your yard, local trails, or park — and right now it's at peak...

Eastern Poison Ivy phenology / invasive-species

eastern poison ivy (Toxicodendron radicans) observed in Hilham

Knowing where poison ivy is actively growing helps hikers, gardeners, and parents identify risk areas in their local landscape...

Eastern Poison Ivy urban-ecology / invasive-species

Pacific poison oak (Toxicodendron diversilobum) observed in E 8th St & Kern, Chico, CA 95928, USA

Pacific poison oak grows in parks, trails, and neighborhood edges — knowing exactly where it's been confirmed helps you avoid...

Pacific poison oak urban-ecology / phenology