Found 2 items, similar to flowers-of-an-hour.
English → English (WordNet) Definition: flowers-of-an-hour flowers-of-an-hour n : annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America [syn: flower-of-an-hour, bladder ketmia, black-eyed Susan , Hibiscus trionum]
English → English (gcide) Definition: flowers-of-an-hour flowers-of-an-hour \flowers-of-an-hour\ n. An annual weedy herb (Hibiscus trionum) with ephemeral yellow purple-eyed flowers, native to the Old World tropics and naturalized as a weed in North America. Syn: flower-of-an-hour, bladder ketmia, black-eyed Susan, Hibiscus trionum. [WordNet 1.5]