Hoary Cress. Lepidium Draba L. Seed reddish brown, surface slightly uneven, slightly flattened, oval to broad oval, 2–2.3 mm. long, usually with two slight vertical grooves on each side, incumbent. This may soon appear in Michigan.

Fig 94. [Golden Pepper-grass. Lepidium sativum] L.

Golden Pepper-grass. Lepidium sativum L. Seed reddish yellow to reddish brown, oval, slightly compressed, often nearly straight on one edge, usually showing two vertical grooves on each side, 2.5 mm. long, cotyledons incumbent. This is not a grass but a plant of the mustard family; it has escaped from cultivation.

Fig 95. [Wild Pepper-Grass. Lepidium Virginicum] L.

Wild Pepper-Grass. Lepidium Virginicum L. Petals white, pods flat, nearly circular; seeds granular, dull, reddish yellow, flat, ovoid with one edge straight, the other rounded, usually with a slight wing on the broad end and on the round edge. 1.5–1.8 mm. long. Mucilaginous when wet. Cotyledons accumbent.

When mature, large plants become tumble weeds. Apparently native to this country.