Calcium oxalate crystals shape and examples of sources:
Type of Calcium oxalate crystals
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Examples
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Prism/Single crystals
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Quillaia bark, liquorice, quassia wood, hyocyamus, clove stalk, senna, cascara, rauwolfia, kurchi, coca
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Cluster Crystals
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Senna leaf, Stramonium leaf, rhubarb, clove, wild cherry bark
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Rosette crystals
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Rhubarb, umbelliferous fruits(coriander, fennel, anise, celery)
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Acicular Crystals/ Raphides
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Single Acicular – Gentian root, cinnamon bark, gentian
Bundle of acicular – squill , ipecac root
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Micro Crystals/ Crystals sand/ Micro sphenoid
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Cinchona, belladonna leaf
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Absent
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Digitalis and aloe
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| Different shape of calcium oxalate crystals |
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| Actual crystals under microscope |
