flower-of-an-hour

Noun flower-of-an-hour has 1 sense

• flower-of-an-hour(n = noun.plant) black-eyed susan, bladder ketmia, flowers-of-an-hour, hibiscus trionum - annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America;
is a kind of hibiscus