From the Latin word "forma"
meaning “form, shape”
The abbreviation f. is used to
signify that the mutation is a form. forma (f.) is placed after the
specific epithet and is not underlined or italicized.
How to write the botanical name of a form:
1. The form name is written after
(forma) f..
2. Do not
capitalize the form name.
3. Underline or italicize the
form name but not the form designation.
Example: Strombocactus disciformis f.
cristata (Strombocactus
disciformis formacristata)
