Trifolium repens
Fabaceae
It must be my lucky day, times 2! I never thought about what species of clover the "traditional" four-leaf lucky clover is. Ah, I have many fond memories laying in the warm school yard grass with my girlfriends, searching every recess for those 4 leaves of luck. Looking online for information was entertaining. Here's a "how-to" from wikiHow and its corresponding luck link - numbers 10 and 12 hold especially true for Nature ID. May you have the blessings of luck.