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The microsporogenesis and male gametophyte development of Euphorbia pulcherrima were studied with paraffin section method. The results showed that the anther of Euphorbia pulcherrima had four chambers. The development of anther wall was dicotyledonous type; its wall consisted of epidermis, endothecium, middle layer and tapetum. The mature male gametophyte development experienced seven major stages...