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Family: Amaranthaceae (Amaranth / Pigweed family)
Mid-Atlantic bloom time: July - October
Spiny Amaranth, true to its common name, has spikes present on the flowers and spines present at nodes. Its flowers are green, lack petals, and have terminal and axillary spikes. Male flowers are at the end of the flower spike, while the female flowers are at the bottom.
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7 August 2024
Great Falls National Park, Great Falls, VA (flowering stalk) 
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7 August 2024
Great Falls National Park, Great Falls, VA 
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7 August 2024
Great Falls National Park, Great Falls, VA (spiny structures at each side of node) 
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7 August 2024
Great Falls National Park, Great Falls, VA (spiny structures at each side of stem node) 
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7 August 2024
Great Falls National Park, Great Falls, VA (male flowers at end of flower stalk) 
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