leaf bases

acuminate acute anatomy angiosperm anther auriculate base bases biological biology botanical botany carpel composed compound cordate cycle detail diagram edge education educational emarginate entire flora flower fruit green histate illustration lamina leaf learn leaves margin margine model morphology nature oblique obtuse ovary ovule part parted parts petal pinnate plant plants pollen receptacle reniform reproduction root rounded sagittate school science scientific section seed shapes species spiny stamen stigma structure study style teaching tip tips trees truncate types vector vegetation