The Collaborative International Dictionary
Leafcup
Leafcup \Leaf"cup`\, n. (Bot.) A coarse American composite weed ( Polymnia Uvedalia).
Wiktionary
leafcup
n. (context botany English) A coarse American composite weed, (taxlink Polymnia uvedalia species noshow=1), now (taxlink Smallanthus uvedalia species noshow=1).