/usr/share/k3d/lsystem/large-spiral-plant.ls is in k3d-data 0.8.0.3-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | # --- L-System Parser/Mutator --- Lj Lapre ----------------------------------
11
30
100
&&&^D
D=AB!'DcZO
B=[c---'''!:D]
A=&+^FLA
L=[---c{-f+f+f-|-f+f+f}]
O=[!iw>>w>>w>>w>>w>>w]
w=[c&{-f+f|-f+f}]
i=;i
@
|