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UP CPMTUP CPMT 2015Morphology of Flowering Plants
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In syngenesious (= synantherous) condition, the stamens are fused by anthers only and the filaments are free. The fused anthers form a ring around the gynoecium. Syngenesious condition of stamens is present in Helianthus (sunflower). Synandrous and monadelphous „ conditions occur respectively in Cucurbita and Hibiscus. In Calotropis, a different structure called gynostegium is present, which is formed by the • fusion of anther with the stigma.