Ontario Weeds: Lamb's quarters
Excerpt from Publication 505, Ontario Weeds,
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Name: Lamb's-quarters, Chenopodium
Lamb's quarters. A. Young flowering plant. B. Seedling in 2nd true-leaf stage, top and side views. C. Seedling in 6th true-leaf stage.
Leaves: First 2 or 4 true leaves apparently opposite (2 per node), but all later leaves and branches distinctly alternate (1 per node); leaves stalked, the blades 3-10cm (1-4in.) long, lance-shaped or more often broadly triangular with irregular, usually shallow teeth; leaves green or grayish due to a covering of a white mealiness or powderiness, sometimes with reddish undersurface on young plants.
Flowers & Fruit: Flowers very small, greenish, densely grouped together into small, thick, granular clusters along the main stem and upper branches, having 5 green sepals but no petals; seeds small, rounded in outline, somewhat flattened, 1-1.5mm (1/25-1/16in.) in diameter, enclosed in a very thin, membranous, smooth, whitish covering (pericarp) which is readily fractured and lost when dry. Flowers from June to August.
Habitat: Lamb's-quarters is very widespread throughout Canada, occurring in cultivated fields, pastures, wasteland, roadsides, gardens and almost anywhere the soil is disturbed.
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