Scanning electron microscopy of starch grains from latex of Euphorbia terracina and E. tirucalli.
The morphology of starch grains isolated from the latex of 2 species of Euphorbia was compared by scanning electron microscopy. In E. terracina they are elongated and greater, in diameter at the midregion than at the tips while in E. tirucalli they are osteoid. Starch grains varied in size in both, species although in E. tirucalli the largest grains, which measured 49 μ, were approximately twice the length of those in E. terracina (27 μ).
Department of Plant Sciences, Indiana University, 47401, Bloomington, Indiana, USA.
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Mahlberg