From: Medicinal plants in the southern region of the State of Nuevo León, México
Age
Number of species
Number of uses
33
12
60
18
27
62
5
63
38
40
66
6
67
57
53
72
8
89
11
92
17
r s = 0.05, α = 0.05
r s = 0.0 α = 0.05