Pot: 6,5 cm.
This cultivar was obtained by Mr. Tsutomu Onzuka around 1974 and for this reason the plant took his name. It has a green epidermis almost entirely covered by a white punctuation, velvety to the touch. Its white areoles are distributed along the margins, forming a continuous line. During warm periods (April to September), bright yellow, silky apical funnel-shaped flowers bloom.