This is the 7039th most frequent Japanese word.
ヤマニ
"ヤマニ" is typically a proper noun, such as a company name or brand, and does not have a direct standalone definition in English.
Here, 'ヤマニ' is used as a proper noun, likely representing a location or establishment name, such as a garden or a place where the flowers are present.
ヤマニの花は美しいです。
The flowers at Yamani are beautiful.
This usage of 'ヤマニ' refers to a person's surname, followed by the honorific 'さん'.
ヤマニさんが来ました。
Mr./Ms. Yamani has arrived.
In this context, 'ヤマニ' might refer to a subject being represented or illustrated in the painting.