Botanical name: Jacobaea analoga Family: Asteraceae (Sunflower family)
Synonyms: Senecio chrysanthemoides, Senecio laetus, Senecio scapiformis
Cheerful Senecio is a tall perennial herb reaching 2 m in height. The plant is hairless below, hairy above, grooved, much branched. Alternately arranged leaves are 15-25 cm long, pinnately divided into toothed lobes, terminal lobe largest, irregularly lobed and toothed, basal lobes stem clasping, upper leaves smaller. Flower-heads are yellow, 1.2-1.8 cm across, in large spreading terminal corymbs. Involucre bracts are 10-12, oblong, acute, often tipped dark brown to black; ray florets 10-12, 3-toothed; achenes 2 mm long, strongly ribbed, pappus white.
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The flower labeled Cheerful Senecio is ...