Flattening of petiole.
Petiole length in milimeters (mm).
Persistance of petiole.
Petiole can be present or absent.
Prickles in petiole.
Source.
Transversal shape of petiole.
Trichomes in petiole.
Sets the length values, considering the value of present.
The minimum length value in milimeters (mm).
The maximum length value in milimeters (mm).
Creates an instance of Petiole.