Authors:

Fragments of the natural method must be sought with the greatest care. This is the first and last desideratum among botanists. Nature makes no jumps. [Natura non facit saltus] All taxa show relationships on all sides like the countries on a map of the world.

Fragments of the natural method must be sought with the greatest care. This is the first and last desideratum among botanists. Nature makes no jumps. [Natura non facit saltus] All taxa show relationships on all sides