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84170B

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Image #   84170B
Name:   Foxglove seed surface (Digitalis purpurea)
Copyright:   Copyright 2009 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Foxglove seed surface (Digitalis purpurea). This image shows the seed coat (or testa) of a foxglove seed (Digitalis purpurea). The testa has an irregular honeycomb-like structure. The purpose of the seed coat structure is to enhance seed germination. The seed coat traps small particles of dust and soil so that when the seed falls to the ground it is anchored and can germinate easily. The testa is mechanically protective and limits entry of solutes into the seed. Foxglove plants are found growing wild in Europe and the USA in woodland and on dry heaths. The leaves are the source of the drug digitalin (a heart drug), for slowing the pulse rate in treatment of heart disease. The flowers are produced on a tall spike, are tubular, and vary in color with species.
Magnification*: x185
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   84170B seed foxglove Digitalis purpurea SEM 06.01.09 Plants digitalis digitalis seed digitalis seed surface digitalis seeds plant plant seed plant seeds seed surface fox glove fox glove seed fox glove seeds foxglove seed foxglove seeds Scrophulariaceae herbaceous perennial perennial foxglove plant foxglove plants digitalis seed coat foxglove seed coat seed coat testa cardiac drug cardiac drugs digitalin heart drug heart drugs Plantaginaceae common foxglove woodland plant woodland plants cardiac disease heart disease pulse rate ornamental plant ornamental plants

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