Foxglove seed coat

Foxglove seed coat

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Credit: DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Caption: Scanning electron micrograph (SEM) of the surface of a seed of the foxglove (Digitalis purpurea), the leaves of which are used to produce the drug digitalin. Digitalin is used to treat heart disease to slow the pulse rate down. The seed exterior of pits, scales, ridges & other forms of ornamentation, may increase the chance of germination. Soil particles become trapped in the spaces (as seen here) so that when the seed falls on damp ground the additional weight anchors it enough to allow germination to proceed. Smooth-coated seeds produce a slimy mucilage for the same reason. Magnification: X 70 at 35mm, X 480 at 8x10-inch size. Foxglove seeds come at 180,000 to the ounce or

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Keywords: botany, digitalis purpurea, foxglove, nature, part, parts, plant, plants, reproduction, reproductive, scanning electron micrograph, sem, structure

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