niponicum
/nih-PON-ih-kum/🏷️ Taxonomy●● Intermediate
Also known as: niponicus, niponica
A geographic epithet placing a plant in Japan, taken from Nippon, the Japanese name for the country. It appears with either one p or two, and nomenclature keeps whichever spelling the describing author first published, so both forms stand as valid names. Appears as niponicus (masculine), niponica (feminine), or niponicum (neuter).
Etymology
From Nippon, the Japanese name for Japan.
Example
“Athyrium niponicum 'Pictum' (Japanese painted fern) is the plant most gardeners meet under this spelling of the epithet.”