Fall Wildflowers of New England
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Nodding Bur Marigold
Bidens cernua
F. Asteraceae
General Description:

Nodding bur marigold is a moderately tall wildflower, measuring 30-90 cm. in height, that has striking, deep yellow composite flower heads and bright green, long and narrow leaves. Leaves are arranged in a opposite fashion along a smooth, delicate stem.

Asdepias syricacia
Flowers:

The radially symmetrical composite flower heads measure 5 cm. in width. They have a central disk of highly reduced, dark yellow disk flowers that is surrounded by six to eight yellow, broad and rounded, petal-like rays with sharply tapered tips. Flowers are arranged singularly atop the terminal shoot. Flower heads nod increasingly as they mature.

Fruit:

The seed-like fruit is small and has two to four barbed spines.

Leaves:

The leaves are thin and long, measuring 5-15 cm. in length. They are smooth and stalkless with a clasping base. Leaves are arranged in an opposite fashion along the length of the stem.

Habitat:

Nodding bur marigold grows best in swamps, along stream banks, and generally over any moist ground.

Fun Facts:

The specific epithet, cernua, is Latin for "nodding" an refers to the nodding flower heads. These flowers heads become increasingly nodded as they mature.

Nodding bur marigold seeds are a food source for ducks and other water fowl.

Asdepias syricacia
Asdepias syricacia
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