Sonchus arvensis var. uliginosus
(Perennial Sow Thistle)

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Flowering Heads in Ground

Whole Plant on Velvet


Lower Stem in Ground

Lower Stem Close-Up



Stem Cut Open



Stem Cross Section


Mid-Lower Leaf Top

Mid-Lower Leaf Bottom


Middle Leaf Top

Middle Leaf Bottom


Mid-Upper Leaf Top

Mid-Upper Leaf Bottom


Upper Leaf Top

Upper Leaf Bottom


Inflorescence Leaf Top

Inflorescence Leaf Bottom


Inflorescence Leaf Top

Inflorescence Leaf Bottom


Flower Head Top

Flower Head Oblique View


Flower Head Side

Flower Head Longitudinal Section


Flower Head Bottom

Fruiting Head


Achene

Achene Close-Up