Radiatiform
Radiatiform Ra`di*at"i*form (r[=a]`d[i^]*[a^]t"[i^]*f[^o]rm),
a. (Bot.)
Having the marginal florets enlarged and radiating but not
ligulate, as in the capitula or heads of the cornflower.
--Gray.
[1913 Webster]
The Collaborative International Dictionary of English.
2000.