Here's a quote from an article by Tony Avent.

There is a virtually unknown group of Hostas that grow on in cracks on rock cliffs, often near waterfalls.. This comprises some of the most elegant of the Hosta species. These Hostas have large thick leaves, often with white leaf backs for reflecting heat and sun generated by the rocks. This group includes Hosta hypoleuca, Hosta rupifraga, Hosta pycnophylla, Hosta longipes, to name but a few.

Is it rupifraga?

Steve

howzbouts 'Urajiro Musashino' ?

hh

Hmmm..may be 'Niagara Falls' or 'Cascades'?

My 3 year old Hosta Adventure from AHS shows on page 15 a little waterfall with the text 'H. hypoleuca prefer moist but well-drained landscapes, where they show optimum growth'. hypoleuca means 'white back', Aden named one `Maekawa' per the Hosta Library. Bernd