THE BIOLOGY OF CANADIAN WEEDS: 23. Rhus radicans L.

• Published in: Canadian Journal of Plant Science
• Main Authors: MULLIGAN, GERALD A., JUNKINS, BONNY E.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1977
• Subjects: Horticulture; Plant Science; Agronomy and Crop Science; Canada; Greene; Newfoundland
• Online Access: http://dx.doi.org/10.4141/cjps77-075; http://www.nrcresearchpress.com/doi/pdf/10.4141/cjps77-075

Poison ivy (Rhus radicans L.) occurs in repeatedly disturbed habitats in every province except Newfoundland. Three varieties are recognized in Canada: var. radicans, var. rydbergii (Small ex Rydberg) Rehder, and var. negundo (Greene) G. A. Mulligan. Variety rydbergii is the most common and widesprea...