Examining the registration data for the 156 new registrations, it appears that there are 12 hostas registered in 2013 that constitute miniatures under the AHS definition of a miniature hosta as being one whose leaf area is less than six square inches, calculated by multiplying the length of the leaf, from leaf tip to intersection with the petiole, by the width of the leaf at its widest part.
MINIATURE HOSTAS IN THE AHS REGISTRATIONS 2013
O = originator, N = nominant (namer), I = introducer, R = registrant
O = originator, N = nominant (namer), I = introducer, R = registrant
H. 'Emerald Elf' -- G. R. Goodwin (ONIR)
2" x 1"
H. 'Forest Treasure' -- G. R. Goodwin (ONIR)
4" x 0.75"
H. 'Glass Slipper' -- D. & M. Beilstein (ONIR)
4" x 1.25"
H. 'Little Dancer' -- D. Van Eechaute (ONIR)
1.375" x 0.875"
H. 'Maurice Mason' -- unknown (O); G. Daniels (NI); G. R. Goodwin (R)
2" x 1.25"
H. 'Mighty Min' -- M. Gilligan (ONIR)
1.75" x 0.875"
H. 'Mini Skirt' -- Walters Gardens, Inc. (ONIR)
2" x 1.75"
H. 'Mouse Capades' -- R. Mortko (ONIR)
2" x 2"
H. 'Needlepoint' -- D. Van Eechaute (ONIR)
2.5" x 2"
H. 'Needle's Eye' -- D. Van Eechaute (ONIR)
2.25" x 1.875"
H. 'Small World' -- G. R. Goodwin (ONIR)
3" x 1.5"
H. 'Solar Mouse' -- D. & J. Ward (ONIR)
2" x 1.75"