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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.