Wildflowers of Tucson, Arizona
White Wildflower
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Marrubium vulgare - Horehound Marrubium vulgare - Horehound
Scientific Name: Marrubium vulgare
Common Name: Horehound
Flower Color: White
Plant Type: Subshrub, Herb, Perennial
Height: To 3 feet (91 cm) tall
Date Observed: April 10, 2004
Notes: The small flowers are in whorls at the leaf axils. The leaves are 1.5-inches (3.8 cm) long, opposite, petiolate, deeply wrinkled, and oval in shape. The square stems are greenish white and covered in woolly hairs. This cultivated, medicinal herb was introduced from Europe and has become naturalized.
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