Creates an instance of Verruciform trichome.
Are verruciform trichomes 'present', 'absent', or 'present or absent'?
If are absent, the length should be null.
absent
length
null
Density of verruciform trichomes.
Verruciform trichomes length in milimeters (mm).
It should be null when present is false.
present
false
Source.
Creates an instance of Verruciform trichome.