Euphorbia hirsuta (Torr). Weigand. Seeds lead colored, obovoid approximately square in transverse section with one side narrower than the others, 4–10 irregular transverse ridges on each side, the raphe standing along one corner, about 1.2 mm. long by 7 mm. wide. Sandy soil.

Fig 124. [Spotted Spurge. Euphorbia maculata] L.

Spotted Spurge. Euphorbia maculata L. Seeds obovoid-oblong, nearly square in cross-sections, minutely pitted and transversely wrinkled with 2–5 broken wavy ridges, a fine dark vertical line (raphe) along one corner, color reddish drab, .6-.8 mm. long. Probably introduced from west of the Rocky Mountains.

Fig 125. [Upright Spotted Spurge. Euphorbia Preslii] Guss. Euphorbia nutans Lag.

Upright Spotted Spurge. Euphorbia Preslii Guss. Euphorbia nutans Lag. Seeds lead-colored obovoid-oblong, with 4 unequal sides as seen in cross-section, pitted and transversely wrinkled, with 2–5 broken wavy ridges, a fine dark, verticle line (raphe) along one corner, 1–1.3 mm. long. Native of eastern North America. Introduced in seeds of red clover.