Sinningia 'Pink Eumorpha'

There is a great deal of uncertainty about the exact origin and nature of this plant.  Its name implies it is a variety of the species S. eumorpha, but "pink eumorpha" is neither a legitimate variety name nor a legitimate hybrid name.

Tuber compared to S. eumorpha and S. conspicua

For what it's worth, the tuber of "Pink Eumorpha" is unlike that of S. eumorpha, seen in three pictures.  The "Pink Eumorpha" tuber has a multi-lobed base, while that of S. eumorpha does not.  In this respect, it resembles much more the tuber of S. conspicua.

"Pink Eumorpha" has also been compared to S. 'Anne Crowley', but the latter also has single-lobed tubers.