Borrichia frutescens (L.) DC.

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Borrichia frutescens is a North American species of flowering plants in the family Asteraceae known by the common names sea oxeye, sea oxeye daisy, bushy seaside tansy, and sea-marigold. In Veracruz it is called verdolaga de mar. It is native to the United States and Mexico, where it occurs along the Atlantic and Gulf Coasts. Its distribution extends from Maryland south to Florida and west to Texas in the US, and along the Mexican Gulf Coast to the Yucatán Peninsula. It is an introduced species in some areas, such as Bermuda and Spain.

This species is variable in appearance. In general, it is a perennial herb or shrub reaching up to about 90 centimeters (3 feet) tall. The herbage is gray-green to silvery, and fleshy. It has oval to lance-shaped leaves up to 11 centimeters long. The blades are toothed near the bases, smooth-edged otherwise, and are usually hairy. The leaf base or petiole usually has at least one spine. The inflorescence is a solitary rounded flower head lined with spine-tipped phyllaries. The head has 15 to 30 short, yellow ray florets. At the center are many yellow disc florets with black anthers. The fruit is a dark-colored, flattened, somewhat triangular cypsela a few millimeters long. As the head dries and the flowers fall away, it becomes a hard, spiny, burr-like body packed with the small fruits.The life span of the plant may exceed five years.

Borrichia frutescens - Wikipedia

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