Cotyledons
Oblong, thick

Roots
Taproot and rhizomes

Stem
Erect, jointed, wiry
Often red-tinged

True leaves
Seedling rosette, arrow-shaped
Lobed at basal end of leaf
Upper leaves slender and
stalkless, often without lobes

Flowers
Small clusters along terminal ends
of stem, no petals
Orange-reddish or green

Note
Presence often indicates acid soil