@Article{taiwania1990353178,
AUTHOR = {Ling-Long Kuo-Huang},
TITLE = {Calcium Oxalate Crystals in the Leaves of Nelumbo Nucifera and Nymphaea Tetragona},
JOURNAL = {Taiwania},
VOLUME = {35},
YEAR = {1990},
ISSUE = {3},
PAGES = {178-190},
URL = {https://taiwania.ntu.edu.tw/abstract/75},
ABSTRACT = {Both Nelumbo nucifera Gaertn. and Nymphaea tetragona Georgi contain crystals in their leaves, but the crystals differ in shape, size and distribution. In Nelumbo the crystals, with a druses form, occur in the central vacuole of crystal idioblast. Generally there is only a single druse per cell. As the crystal idioblasts mature, the cell wall partly collapses around the crystal and the sharp points or facets of the crystal protrude into the adjacent air space. In Nymphaea, the crystal has a prismatic form. It was observed in the extraplasmic space between the primary and secondary cell wall of the sclereids. As the sclereids grow, the sharp facets of the crystal become protruded but remain covered by primary wall material. The crystal idioblasts in these two aquatic plants are found associated with aerenchyma. Their formation is suggested to linked with evaporation of water. The crystals in both Nelumbo and Nymphaea were identified as calcium oxalate by means of X-ray microanalysis and acid-etching tests.},
DOI = {10.6165/tai.1990.35.178}
}