Using physical methods, no morphological changes of calcium oxalate needle crystals separated from the Araceae, and the use of X-ray powder diffraction and infrared spectroscopy of the needle crystal composition were identified.

physical methods will be used, calcium oxalate crystal-needle pattern changed from days separated the southern star, and to use X-ray powder diffraction law and infrared absorption of needle crystal composition for the identification.

Uses the physical method, separates the calcium oxalate needle crystal non-shape change from the jack-in-the-pulpit, and has carried on the appraisal using the X- beam powder-diffraction method and the infrared spectrometry to the needle crystal composition.

By physical means, the needle of calcium oxalate crystals without morphology change from Arisaema separated, and using x-ray powder diffraction and needle crystals by infrared spectrum composition of the identification.

By physical means, the needle of calcium oxalate crystals without morphology change from Arisaema separated, and using x-ray powder diffraction and needle crystals by infrared spectrum composition of the identification.