antho-, anth-, anthero-, anther-, -antherous, -anthemous, -anthic, -anthous, -anthus, -anthy

(Greek: flower, flowers; blossom, blossoms; that which buds or sprouts)

A rose by any other name probably means the speaker is ignorant about the names of flowers.

—Anonymous
epanthous
1. Living on flowers, applied to certain fungi.
2. A reference to a fungus that parasitizes flowers.
erianthous
Wooly flowered.
exanthema
1. A skin eruption accompanying certain infectious diseases.
2. A disease, such as measles or scarlet fever, accompanied by a skin eruption.

From Late Latin exanthma, from Greek, eruption, from exanthein, "to burst forth" (ex- + anthein, "to blossom" [from anthos, "flower"].

gymnanthous (adjective) (not comparable)
Referring to plants that have bare flowers which are without both calyx (covering) and corolla (whorl of petals inside the calyx): After buying their new house, Jack and Jill wanted to plant a willow tree which, they found out, is a gymnanthous type of tree with uncovered flowers.
gynantherous
1. In botany, having stamens abnormally converted into pistils.
2. A situation in which stamens have been metamorphosed into pistils.
hebeanthous
Having the corolla of the flower pubescent.
hemeranthous, hemeranthy
Flowering only during the day.
hydranth
1. A feeding zooid in a hydroid colony having an oral opening surrounded by tentacles.
2. The terminal part of a hydroid polyp that bears the mouth and tentacles and contains the stomach region.
hypanthium
1. A cup-shaped or tubular body formed by the conjoined sepals, petals, and stamens.
2. The ringlike, cup-shaped, or tubular structure of a flower on which the sepals, petals, and stamens are borne, as in the flowers of the rose or cherry.
hysteranthous
A reference to leaves that are produced after flowers.
isanthous
Having regular flowers.
lasianthous
Woolly flowered.
leucanthous
White flowered.
monanthous
1. Bearing a single flower.
2. Having but one flower; one-flowered.
nyctanthous
Flowering only during the night.