Are spicule 'present', 'absent', or 'present or absent'?
Petiole length in milimeters (mm).
Shape of spicule.
Source.
Trichomes in spicule.
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.