Sentence:  To-morrow, oh, to-morrow, / In pastures green, where living waters swell, / And feed that fruitful tree, / We'll find the <WSD>amaranth</WSD> and asphodel, / There Mary's peerless lilies blossom well. 
Meaning of the word marked with <WSD> tags:  Any of various herbs of the genus "Amaranthus".