Leonurus cardiaca (Motherwort) - photos and description
General: Rhizomatous perennial having stems which are four-angled and pubescent.
Flowers: Flowers grow in dense axils of the upper leaves. The flowers are two-lipped, the upper lip villous, the lower lip with maroon spots, the corolla pinkish-purple. We measured flowers at 9 mm long. The calyx has 5 lobes, each with an acute tip. Each of the 5 lobes have a rib.
Leaves: Leaves are opposite, have long petioles, and are reduced in size upwards. Leaves are palmately lobed with 3 to 7 lobes. They are sparingly hairy on top and their bottoms are pubescent.
Height: Height listed in Budd's Flora to 150 cm. We've measured plants to 58 cm tall.
Habitat: Waste ground, and along streams.
Abundance: Uncommon.
Origin: Introduced.
When and where photographed: The above photos were taken September 1st, wooded, shady banks of the Antler River, about 300 km southeast of our home in Regina, SK.