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Witches thimbles


Witches thimbles
Photo Information
Copyright: michael shalter (retlash) Silver Note Writer [C: 1 W: 1 N: 67] (284)
Genre: Plants
Medium: Color
Date Taken: 2007-06-22
Categories: Flowers
Exposure: f/4, 1/160 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2007-06-25 8:07
Viewed: 2814
Points: 2
[Note Guidelines] Photographer's Note
This is wild Digitalis purpurea, better known as foxglove, "witches' thimbles," "dead men's bells," "bloody fingers," etc.
The foxglove is a favorite flower of the honey bee. The projecting lower lip of the corolla forms an alighting platform for the bee. No animals browse on foxglove, perhaps instinctively recognizing its poisonous nature.
Digitalis contains four important glycosides of which three are cardiac stimulants. The most potent is digitoxin, an extremely poisonous drug, digitalin, and digitalein.
Foxglove has been used since early times in heart cases. It increases the activity of all muscle tissue, but especially that of the heart and arteries. The first consequence of its absorption is a contraction of the heart and arteries, causing a rise in blood pressure. After taking a moderate dose, digitalis slows the pulse and causes an irregular pulse to become regular. Since digitalis is liable to accumulate in the system, it should be monitored carefully. Its poisonous action is manifested by irregular pulse, hypotension, and GI irritation. With prolonged use, because of its contractile action on the heart, it can lead to cardiac hypertrophy. Notwithstanding these potential dangers,
digitalis is a vital weapon in our therapeutic armory.

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Critiques [Translate]

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  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2007-06-26 4:55]

Hi Michael.
You have presented a very nice flowers and have done it with great taste. I like your very impressive POV and allowed opportunity to see all internal features (and beauties) of the flowers as well as the whole blossoming plant. Details, colours and composition are very good too. My kind regards and TFS.
Alexei.

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