Colors

Data mode

Account

Login
Sign up

Copy permalink to share

Toxicodendron rydbergii (Small ex Rydberg) Greene. Western Poison Ivy. Phen: May-Jul. Hab: Acid pine-oak forests and woodlands at moderate elevations. Dist: NS west to BC, south to New England, NY, n. OH, n. IL, IA, w. KS, w. TX, AZ, Mexico (CHH, SON), and OR; disjunct in the Appalachians in PA, WV, and VA. Reported for NC by Gillis (1971), but the location (Cumberland Co., in the fall-line Sandhills), does not seem plausible {investigate further with specimen}.

Origin/Endemic status: Native

Synonymy: = C, GrPl, Il, K1, K3, K4, Mex, Mi, NE, NY, Ok, Pa, Va, Gillis (1971), Greene (1905); = n/a – RAB, S; = Rhus radicans L. var. rydbergii (Small) Rehder – F, G, WV; = Toxicodendron radicans (L.) Kuntze var. rydbergii (Small ex Rydb.) Erskine – NeUS

Show in key(s)

Show parent genus

Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC
  • Eastern Mountains and Piedmont: FAC
  • Great Plains: FACU
  • Midwest: FAC
  • Northcentral & Northeast: FAC

Heliophily ?: 7

Your browser does not support SVGs

Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.

image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Scott Ward | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷

Feedback

See something wrong or missing on about Toxicodendron rydbergii? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.


Cite as...