Pickover stalks are cross-shaped orbit traps invented by Clifford Pickover. See also my 3D Pickover stalks fractals. Here is some Mathematica code:
(* runtime: 33 seconds *)
f[z_] := Min[Abs[{Re[z], Im[z]}]]/0.03;
OrbitTrap[zc_] := Module[{z = 0, i = 0}, While[i < 100 && Abs[z] < 100 && (i < 2 || f[z] > 1), z = z^2 + zc; i++]; Hue[Arg[z]/(2Pi), Min[1, 2 f[z]], Max[0, Min[1, 2(1 - f[z])]]]];
Show[Graphics[RasterArray[Table[OrbitTrap[xc + I yc], {yc, -1.5, 1.5, 3/274}, {xc, -2.0, 1.0, 3/274}]], AspectRatio -> 1]]
Links
- Biomorphs – biological-looking Pickover stalks, by Paul Bourke
- Dragon on a Pedestal – by Damien Jones
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Paul Nylander 
The dragon pedestal link is misspelled – pedinestal.