citrus: any of numerous tropical usually thorny evergreen trees of the genus Citrus having leathery evergreen leaves and widely cultivated for their juicy edible fruits having leathery aromatic rinds
vascular plant: green plant having a vascular system: ferns, gymnosperms, angiosperms
cy pres: a rule that when literal compliance is impossible the intention of a donor or testator should be carried out as nearly as possible