Ambrosia psilostachya
(Perennial Ragweed)

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Whole Plant


Whole Plant


Middle Leaf Top


Middle Leaf Bottom


Mid-Upper Leaf Top


Mid-Upper Leaf Bottom


Pistillate Flower Heads




Pistillate Flower Head, Side


Pistillate Flower Head, Bottom


Staminate Flower Heads




Two Staminate Heads


Two Staminate Heads, Close-Up


Staminate Flower Head Top, Stage 1


Staminate Flower Head Top, Stage 2