Foxglove
Foxglove is a common biennial whose distinctive tall flower spikes can be found growing in forest clearings, hedge banks and open heathland throughout the British Isles and most of Europe.
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The drug digitalis originates from this plant and its heartbeat-stabilising effects have been recognised since at least the late 18th Century when its use as a medicinal herb was first reported.
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Digoxigenin (DIG), a steroid extracted from the flowers and leaves of Foxglove, is often used in molecular biology as a safer alternative to radioactivity in the labeling of oligonucleotide probes used in Southern and Northern blots.
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