flow'er

[L. flos {fior-).] The sexual organs of a. phanerogamous plant, with the floral envelopes, or perianth the sexual organs are the stamens (male) and pistils (female) the perianth consists of corolla with its petals (the inner envelope) and caljTc with its sepals (the outer envelope); the male or female organs may be absent (unisexual flower) and there may be but one perianth. complete' f., one which has all the parts of a flower—calyx, corolla, stamens, and pistil, cy'clic f., one the leaves of which are arranged in whorls. fe'male f., one which has no stamens, or male elements. hemiaph''rodite f., one which has both ' male and female elements, or both stamens and pistil, irreg'ular f., one the parts of the floral envelope of which are unequal in size, male f., one which has stamens only, but no pistil, reg'ular f one the parts of the floral envelope of which are equal in size, unisex'ual f., one which has but one sexual element, either the male (stamens) or the female (pistil), zygomor'pho us f., an irregular f. which is divisible into similar halves by a vertical plane.