The first thing that strikes the eye is that the 33 variables have settled dynamically into the circular, even spiral, pattern that is such a common result of mappings of NMDS data onto 2-D space. As for it being spiral, I've recently concluded that the NMDS maps of many idea spaces are best interpreted chirally; that is, the best way to analyze the logic of their order is by starting at some terminal or peripheral extreme and proceeding in an azimuthal sequence, e.g. counterclockwise, around a ring, disc, or spiral, for 360 degrees, or a bit more or a bit less than that. The sets of ideas seem to unfold in this way, whereas in the reverse direction - say clockwise - they may not develop at all or may only do so in a limited, less natural, seemingly defective, or nonequivalent way.
I haven't been able to decide whether this rotatory handedness is saying something about a merely happenstance direction of thought, intrinsic chirality of the human mind or brain, chirality of the universe itself or of the transcendental world of ideas, a form of logic used without truly being necessary or perhaps generally advantageous, or perhaps, very simply, about otherwise trivial peculiarities of the statistical algorithms employed in the calculation of the NMDS graphs.
But in the present case, the evident peripheral start (or stop) of a right-handed spiral in the southwest extreme of the 2-D Causes-of-Forms map could make a kind of sense, since this asymmetry, and the gap just north of the tail, might be the natural correlate of the seemingly unique, unipolar {b,T,X} region, where, conceptually, the morphological causation at play has a somewhat ENDLIKE quality.
Note that the variables of the map show signs of running in two westward arrows from the mideast; and of falling into a vertical line in the west:
If there is in fact a general spiral, one might view it, not as being incomplete - say by ending at {D} after turning only ~345 deg, but rather as a closed spiral of 450 deg-495 deg - that at {E} or {f}. This, too, could make conceptual sense, by allowing a first layer of {M - say of Branching-related causation} (or D sub 1) to covary with {g} (or D sub 2); and a second layer, branch, or spiral turn of {M} (or D sub 1) to vary independently of {g} (or D sub 2) - in the far south of the map.
About the only difference is that in Figure 4 the corners are rounded, presumably owing to the basic assumptions or world model of NMDS.
In an effort to gain and instill a little better understanding of Figure
1, I've drawn an overleaf map to this original map of the space of the
interrelatedness of the general causes of forms. On this new, pictorial
map I've sketched about 150 iconic pictures of different generic shapes
AND/OR of physical or abstract situations apt to cause or influence the
development of those shapes. The indicated forms represent the result of
a laborious effort to imagine the characteristic kinds of shapes that each
of the 33 causes of form are most apt to originate or to contribute or
relate to. So on this second map there appears, at the site of each Cause-of-Form
on the first map, a family of illustrated shapes and, if you will, morphogenetic
principles. (Let me stress that some of the sketches are to be treated
metaphorically rather than literally. In a few cases, simply because they
are so badly drawn.)