Ontario Weeds: Sun spurge
Excerpt from Publication 505, Ontario Weeds,
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Table of Contents
- Other Names
- General Description
- Stems and Roots
- Flowers and Fruit
- Related Links
Name: Sun spurge Euphorbia helioscopia
Other Names: euphorbe réveille-matin, Wartweed, réveille-matin, herbe aux verrues
Family: Spurge Family (Euphorbiaceae)
General Description: Annual, reproducing only by seed.
Sun spurge, viewed from above. Stems & Roots: Very similar to Petty spurge but differs from it by usually being taller (5-60cm, 2-24in. high) and coarser with larger leaves (1-5cm, 2/5-2in. long), by having a whorl of 5 leaves at the tip of the stem and 5 main branches to the inflorescence umbel
Flowers & Fruit: And by having seeds which are egg-shaped to nearly spherical, 2-2.5mm (1/12-1/10in.) in diameter, black and roughened by a network of prominent vein-like ridges over the entire surface.
Habitat: Sun spurge has nearly the same distribution in Ontario as Petty spurge and occupies similar habitats.
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