morphophyly

from The Century Dictionary.

• noun The tribal history of forms; that branch of phylogeny, or tribal history, which treats of form alone, without reference to function, the tribal history of the latter being called physiophyly.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Biol.) The tribal history of forms; that part of phylogeny which treats of the tribal history of forms, in distinction from the tribal history of functions.