Curiosa: Good omens?

Flowers and leaves are frequently pressed in books and then forgotten ... until the books are sold or donated to my institution and I catalog them. By custom, we don't pay much attention to pressed vegetable matter -- not even to note its presence, unless it's in a herbal for exemplary purposes. Still, it did cheer me up to discover five dried four-leaf clovers in a 1735 Irish edition of Miscellaneous Works in Verse and Prose of the Late Right Honourable Joseph Addison, Esq. today. Hopefully it bodes well for this cataloging project, newly begun in this new year ...