sentence: Some people wear sprigs of shamrock in a buttonhole on the holiday.
sentences_before: According to a legend, Saint Patrick used it to illustrate the doctrine of the Holy Trinity. The name 'shamrock' is  derived from Irish '. Sometimes other three-leafed plants are called shamrocks. The shamrock can be used for its medicinal properties. It was used as a motif in Victorian days.
concept_name: people
headings: Shamrock
categories: Plants Ireland