Oxalidaceae - wood-sorrel family

Gerald A. Mulligan
Research Scientist and Research Institute Director (retired) and presently Honorary Research Associate, Agriculture and Agri-Food Canada,
Ottawa, Ontario K1A 0C6, Canada

Awarded the George Lawson Medal by the Canadian Botanical Association in 2006.
Awarded the Faculty of Macdonald, McGill University, Most Distinguished Alumni Award on October 18, 2014.
Read his biography "The Real Weed Man" available in print and ebook.

Oxalis stricta L., European wood-sorrel, oxalide d’Europe
br> A perennial, with semi-erect to erect stems up to 18 inches (45 cm.) high. It sometimes behaves like an annual. Flowers have 5 petals and are a bright yellow. Mature flowers and seed capsules are on straight stalks. Mature seed capsules often open explosively, scattering its seeds. European wood-sorrel is a weed of lawns, gardens, and other disturbed habitats. It is especially common near dwellings. It was introduced to this Continent from Europe and it is now naturalized throughout our area.


Click on a photo to view an enlarged image.
Weed Name Photo Weed Name Photo
European wood-sorrel, oxalide d’Europe European wood-sorrel, oxalide d’Europe
European wood-sorrel, oxalide d’Europe European wood-sorrel, oxalide d’Europe
European wood-sorrel, oxalide d’Europe
(capsules)
European wood-sorrel, oxalide d’Europe
(stem hairs)
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