A. - Digitalis purpurea, Linnaeus: p. 111.

1. The didynamous stamens, separated from the corolla.

2. The pistil.

3. A transverse section of the ovary. B. - Orobanche minor, Sutton . p. 112.

1. A flower separated from the spike, with its bract.

2. The corolla laid open, showing the attachment of the stamens.

3. One of the sepals.

4. The pistil with a bract and sepals, the corolla removed. C. - Verbena officinalis, Linnaeus: p. 114.

1. A flower, separate.

2. The corolla laid open, showing the attachment of the stamens, and surrounding the pistil. D. - Salvia pratensis, Linnaeus: p. 113.

1. A flower, separate.

2. The stamens, showing the short filament, with the elongated connective bearing a perfect anther on its long arm and an abortive one on its short arm.

3. Another view of the lower part of the connective.

4. The pistil, showing the four-lobed ovary.

Plate 17

Digitalis Purpurea.

Orobanche minor.

Verbena officinalis

Salvia Pratew.Fitch,del ethith

Vincent Brooks, Imp