David Stone of Connecticut originated this cultivar which was registered by Peter Ruh of Ohio in 1987. The parentage is unknown but it grows into a medium size hosta about 11 inches high that spreads to about 26 inches. Its leaves resemble elongated hearts, are slightly corrugated and are slightly cupped. Very pale lavender flowers bloom in July.

Similar plants include the species, H. nakaiana.

This cultivar was named for Pauline Banyai's granddaughter.

In The Hosta Journal (1992 Vol. 23 No. 1) there is an article by Peter Ruh about the so-called David Stone Medium or Miniature hostas which went by a numbering system that started with DSM. This cultivar was called DSM #11 and was described as "Medium-small, leaves deep-green, slight blue cast, heart-shaped, some cupping, flowers lavender white, clustered at top 2" of scape."

"1987 Registration: H. ‘Mary Joe’ This name was registered incorrectly. It should have been registered as H. ‘Mary Jo’."