rugosities

ru·gose   roo-gohs, roo-gohs Show IPA
–adjective
1.
having wrinkles; wrinkled; ridged.
2.
Botany. rough and wrinkled: applied to leaves in which the reticulate venation is very prominent beneath, with corresponding creases on the upper side.
Origin:

1695–1705; < L rūgōsus wrinkled. See ruga, -ose1

I look for rugosities on the rock face to smear on to when I am rock climbing.