MINT FAMILY. LABIATAE.

Fig 155. [Dead Nettle. Lamium amplexicaule] L.

Dead Nettle. Lamium amplexicaule L. Achenes light brown, conspicuously marked by white spots some of which coalesce making the surface striped crosswise, obovate-oblong, pointed at the smaller end, 1.5–2 mm. long, the outer surface rounded, the inner face angled, the concave surfaces sloping to the edges from a central vertical ridge. Introduced from Europe. Thrives in cool weather.

Fig 156. [Motherwort. Leonurus Cardiaca] L.

Motherwort. Leonurus Cardiaca L. Achenes light brown, obovoid-oblong, rounded on one side flat on the other two sides, the truncate apex hairy, 2–2.4 mm. long. Introduced from Europe. Waste places.