Anther of a prunella plant.

Prunella anther

Anther of a prunella plant.

Calyx of a prunella plant.

Prunella calyx

Calyx of a prunella plant.

Ovary of a prunella plant.

Prunella ovary

Ovary of a prunella plant.

"The prunella, or self-heal, is a genus of hardy perennial, herbaceous plants belonging to the order Labiatae."—Finley, 1917

Prunella

"The prunella, or self-heal, is a genus of hardy perennial, herbaceous plants belonging to the order…

Opened corolla of a prunella.

Prunella flower

Opened corolla of a prunella.

"Self-heal. (Prunella vulgaris). The upper part of the stem with flowers. a, the calyx; b, the corolla; c, a leaf; d, a bract from the inflorescence." -Whitney, 1911

Self-Heal

"Self-heal. (Prunella vulgaris). The upper part of the stem with flowers. a, the calyx; b, the corolla;…