Table 02. Sanguinaria canadensis.

Fig. 1. Represents the Sanguinaria Canadensis of the natural and most common size, in the early part or middle of April. During the heat of the day, the petals are more horizontal than they can be well represented in a drawing; towards evening they converge; and at night they are wrapped up.
Fig. 2. The capsule or seed vessel, about half mature. As the plant, unless sought after with some care at the period of its inflorescence, will seldom be met with in flower, the capsule and large leaves of the advanced plant, may serve to identify it.

This image is from W. Barton's Vegetable Materia Medica, 1817 (Vol. I), 1818 (Vol. II), Sanguinaria.