Radiatiform

Ra`di`at´i`form

    (rā`dĭ`ăt´ĭ`fôrm)
a.1.(Bot.) Having the marginal florets enlarged and radiating but not ligulate, as in the capitula or heads of the cornflower.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.