Sonchus asper
(Prickly Sow-Thistle)

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Whole Plant in Ground




Stem Cross Section


Lower Third of Plant


Middle Third of Plant


Upper Third of Plant


Lower Leaf Top


Lower Leaf Bottom


Middle Leaf Top


Middle Leaf Bottom


Mid-Upper Leaf Top


Mid-Upper Leaf Bottom


Upper Leaf Top


Upper Leaf Side


Middle Leaf Base Close-Up


Flower Head Top


Flower Head Side


Flower Head Longitudinal Section


Ray Floret


Ray Floret