tapetum defined in 1951 yeartapetum - tapetum;
tapetum - (1) In vascular plants, layer of cells, rich in food material, surrounding a group of spore mother cells, e.g. in fern sporangium, pollen sacs of anther; gradually disintegrate and liberate their contents which are absorbed by the developing spores. (2) Of vertebrate eye, reflecting layer of retina or choroid.
near tapetum in Knolik
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