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...The first root in seed producing plants is the [[radicle]], which expands from the plant embryo after seed germination. ...tem-branches and leaves are ''exogenous'', ''i.e.'', they start to develop from the cortex, an outer layer. ...

{{Short description|Spice extracted from orchids of the genus "Vanilla"}} ...orchid]]s of the genus ''[[Vanilla (genus)|Vanilla]]'', primarily obtained from pods of the Mexican species, '''flat-leaved vanilla''' (''[[Vanilla planifo ...