Bouncing Bet. Soapwort. Saponaria officinalis L. Flowers white; seeds dark lead-color, flattened, short-kidney-shaped to circular with notch on one side, 2 mm. across, more or less, with 6–7 curved rows of short, shiny tubercles. Naturalized from Europe, delighting in sandy soil.

Fig 65. [Cow-herb. Saponaria Vaccaria] L.

Cow-herb. Saponaria Vaccaria L. Seed dull, jet-black, slightly roughened by great numbers of minute points, nearly spherical, 2.3 mm. in diameter. An annual very troublesome in spring wheat. Introduced from Europe.

Fig 66. [Sleepy Catch-Fly. Silene antirrhina] L.

Sleepy Catch-Fly. Silene antirrhina L. Flowers pink; seeds lead-color, slightly flattened, circular to short-kidney-shaped, each side covered with 5–6 curved rows of pointed tubercles giving the appearance of having two blunt extremities bent together, .5-.7 mm. across. Compare seeds with those of Arenaria above described. When in flower, two of the upper internodes are glutinous. Only found on thin soil.