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UP CPMTUP CPMT 2015Morphology of Flowering Plants
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Spadix is a special type of spike which possesses a fleshy peduncle and large green or coloured bract called spathe. The peduncle bears an upper coloured and sterile appendix. The lower part of the peduncle possesses sessile unisexual flowers, upper male and lower female. The two types of flowers are separated by downwardly directed sterile hair or neuter flower, in a spadix the appendix of the peduncle and the spathe are coloured to attract insects for pollination. The spathe is tubular in the basal region to protect the flowers. Examples banana, Colocasia, maize etc.