diffluent

In the genus Elaphomyces, the asci are more than commonly diffluent.
Fungi: Their Nature and Uses|Mordecai Cubitt Cooke
The new-born infant is a spinal being, with an unformed diffluent brain, composed largely of water.
Essay on the Creative Imagination|Th. Ribot
The diffluent imagination is another general form, but one that is completely opposed to the foregoing.
Essay on the Creative Imagination|Th. Ribot
Thus the diffluent imagination is, trait for trait, the opposite of the plastic imagination.
Essay on the Creative Imagination|Th. Ribot

Here we come away from the vague forms; the diffluent imagination becomes substantial and asserts itself through its permanence.
Essay on the Creative Imagination|Th. Ribot