raphide

thumb|Raphides in Epipremnum ''Devil's ivy (600× magnification) Raphides ( ; singular raphide or raphis'') are needle-shaped crystals of calcium oxalate monohydrate (prismatic monoclinic crystals) or calcium carbonate as aragonite (dipyramidal orthorhombic crystals), found in more than 200 families of plants. Both ends appear needle-like, but raphides tend to be blunt at one end and sharp at the other.

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Commons category: Raphides

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~16 min read

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6 sections

Contents

Calcium oxalate in plants
Harmful effects
Plants containing raphides
See also
References
Bibliography

thumb|Raphides in Epipremnum ''Devil's ivy (600× magnification) Raphides ( ; singular raphide or raphis) are needle-shaped crystals of calcium oxalate monohydrate (prismatic monoclinic crystals) or calcium carbonate as aragonite (dipyramidal orthorhombic crystals), found in more than 200 families of plants. Both ends appear needle-like, but raphides tend to be blunt at one end and sharp at the other.

== Calcium oxalate in plants == thumb|left| Raphides in Hypoestes phyllostachya, the polka dot plant