According to
The Hostapedia by
Mark Zilis (2009), "..."Ogon"
is not a cultivar name, but the Japanese word for gold.
In Japan gold-leaved seedlings of species are often
listed with the name 'Ogon'. In such cases, the Japanese
common name should be added to "Ogon" to create a
cultivar name. Hence, H. rectifolia 'Ogon'
becomes H. rectifolia 'Ogon Tachi'.
This is a golden-yellow colored variety of the
species H.
longipesfrom
Japan.
It is cited as the pollen parent of H. 'Red
Veins'.
Mikiko Lockwood in an article on The Hosta Library titled,
A Little About Japanese Hosta Terms defines the term ogon or oogon as gold or yellow.
Many hostas in Japan have been given the
simple name 'Ogon' which would indicate that
the plant has yellow or gold colored
foliage. There are at least 11 such plants
with that name, all from different species
including: