David Stone of Connecticut originated this cultivar of unidentified parentage. It was registered by The American Hosta Society on his behalf in 1986. The plant grows into a medium size hosta about 13 inches high with a spread of around 25 inches. Its green foliage has a white marginal variegation. Purple flowers are borne in August.

According to The Hostapedia by Mark Zilis (2009), "...one of several 'Ginko Craig' look-alikes...often misspelled 'Excaliber'."

"Schmid (1991) credits "Piedmont" as the originator of this cultivar. That would be Henry Payne of  Piedmont Gardens in Connecticut. However, previous references have said that Payne introduced several of Stone's cultivars through his nursery."

An article titled The Hosta Legacy of the Late David Stone appeared in the 1985 issue of what was then called The American Hosta Society Bulletin. The article was authored by Stone's former partners in the Piedmont Gardens nursery in Waterbury, Connecticut, F. Henry Payne and Philip R. Payne. "H. 'Excalibur' was named in 1979. It is a delightful miniature which would be useful in the attempt to find a variegated liriope substitute. Its leaf pedicel is 5 1/4 inches, and this joins 4 3/4 inch long sword-like leaf which is 3/4 inch at its widest. The green center is margined with a very regular white edge. A good increaser, this plant has lavender flowers." This is one of the so-called David Stone's Miniatures.