balsamroot,yellow flower, photo

Arrowleaf Balsamroot

Yellowstone NP

Arrowleaf Balsamroot (Balsamorhiza sagittata), common to mountain fields, are perennials with fleshy taproots and caudices bearing erect stems and large, basal leaves. Atop the tall stems are showy yellow sunflower-like blooms. Like the rest of the sunflower family, its "flowers" are actually inflorescences composed of numerous tiny flowers (florets) that take up different jobs: each of the ‘petals,' for instance, is actually a single floret bearing one enormous petal and a few minute ones; when taken together, these "ray florets" create the illusion of a ring of petals.. Photo © copyright by Robert Faucher.

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