The New Potato Culture (1891)
Elbert S. Carman

Potato hybrid

Speaking of "hybrid" potatoes, the following bit of experience may interest the reader. An attempt was made to cross the tomato upon the potato. This failed. Pollen from the alkekengi, or strawberry tomato, was then applied to the pistils of the potato flower, and one seed ball was the result. Several seeds were planted, four of which sprouted and grew. The plants resembled potatoes in all ways save two: they did not blossom, and in the fall it was found, upon digging them up carefully, that not a tuber, nor the sign of one, had formed.

Physalis alkekengi L. - strawberry groundcherry