Arizona Naturalists >>> Sycamore Gallery Flora >>> Lamiaceae >>> Marrubium vulgare

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Marrubium vulgare

Photo © by Michael Plagens

Observed along Camp Creek, Maricopa Co, Arizona, USA. April 2009.

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PERENNIAL HERB: Many erect stems from a perennial root stock. Mostly unbranched stems reach almost meter tall under ideal conditions. The stems are coated with matted hairs, thus appearing whitish.

FLOWER: Small white flowers are bilaterally symetrical & arranged in dense clusters along the stems at the leaf axils. Some butterflies are attracted to these flowers.

LEAVES: Nearly ovate leaves are bubbly-textured and the margins are rounded-toothed (crenulate).

RANGE: A non-native plant that has become very common to abundant in the understory of sycamore gallery woodlands. It is normally considered an invasive weed and becomes more common in areas grazed by cattle. Native to Europe and widely spread from cultivation.

FRUIT: Dry capsules with four nutlets.

UNARMED.

Lamiaceae -- Mint Family

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Arizona Naturalist
Sycamore Canyons
The Flora of Arizona's Sycamore Canyons


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Copyright Michael J. Plagens, 1999-2010