This is one of those cases where there are two hostas with the same name. Neither is registered with The American Hosta Society. The first one to be registered would become the "official" hosta of that name and the other would have to be renamed.

This form of H. 'Gloriosa' was originated by Robert Savory of Savory's Gardens in Minnesota. It is a medium size plant with dark green foliage and a narrow, white marginal variegation. Pale lavender flowers which are bunched near the top of the scape bloom from late July into August but it does not set seeds..

According to The Hostapedia by Mark Zilis (2009), "Like 'Gloriosa' its margin has a slight drawstring which causes the blade to cup up or down at maturity."

Hosta Helper will call this plant 'Silver Lining' (Savory)

A blue-green hosta of unidentified background, this cultivar is from Bill Janssen of Collector's Nursery in Washington. Its foliage rippled, has thick substance and a silvery white bottom. It bears lavender flowers.

Hosta Helper will call this plant 'Silver Lining' (Janssen)