Maddy says the Flora Diem flower has a 24 hour life cycle. A plant's life cycle goes from seed sprouting, to plant growing, to flower blooming then wilting, to seed maturing. The writers probably meant to say the flore diem flowers only lasted a day. The prop flowers we do see are Hemerocallis species, aka Day Lilies, known for blossoms that are short lived.
One of the infirmary nurses is named Ogawa, which was also a character created by Brannon Braga and portrayed by Patti Yasutake in Identity Crisis (1991).