Hoya mappigera Is Very Closely Related to Hoya sammannaniana

From their leaves to their flowers Hoya mappigera and Hoya sammannaniana – Deep Bell (EPC 883) are very similar.  Here are two side by sides showing the two together.  You can see that the coronas are different color.

Hoya mappigera on the left and Hoya sammannaniana on the right.

Hoya mappigera on the left and Hoya sammannaniana on the right.

Hoya mappigera on the left and Hoya sammannaniana on the right.

Hoya mappigera on the left and Hoya sammannaniana on the right.