Ontario Weeds: Thyme-leaved spurge
Excerpt from Publication 505, Ontario Weeds, Order this publication
Table of Contents
- Other Names
- General Description
- Photos and Pictures
- Stems and Roots
- Flowers and Fruit
- Similar Species
- For more information...
A. Plant lying prostrate on the ground.
B. End portion of flowering and fruiting stem.
Stems & Roots: Stems smooth, prostrate to somewhat erect, 10-30cm (4-12in.) long, reddish to green; leaves 3-14mm (1/8-3/5in.) long and basically oblong, with almost entire margins and asymmetrical bases.
Flowers & Fruit: Flowers in complex inflorescences called cyathia, as described for Spotted spurge, each cyathium very small (0.8-1.2mm, 1/30-1/20in. in diameter) and producing a single fruit or seedpod that is smooth, sharply 3-angled, about 1.5-2.0mm (1/16-1/12in.) long and wide, and containing 3 gray seeds. The entire plant, except its seeds, contains a white, milky juice. Flowers from July to September.
Similar Species: It is distinguished from other prostrate weeds by the following: from Purslane by its milky juice, less succulent stems and leaves, and its opposite leaves; from the prostrate knotweeds which often have reddish stems by having milky juice, opposite leaves and no ocrea; from Carpetweed by having opposite leaves rather than whorls of 3 to 8 leaves at each node; and from other prostrate spurges by its hairless stems and its leaves being almost entire (with rarely smooth margins).
For more information:
Toll Free: 1-877-424-1300