catapetalous

From cata- +‎ petalous.

catapetalous (not comparable)

1. (botany) Having the petals held together by stamens, which grow to their bases, as in the mallow.
   • 1962 (posthumously published) Mark Twain, A Cat Tale in Letters from the Earth

     […] ever and anon the enchanted eye wandered from congeries of lordly cat-tails and kindred catapetalous blooms too deep for utterance […]