List of Nepenthes Natural Hybrids - Peninsular Malaysia and Singapore

Peninsular Malaysia and Singapore

Right: N. benstonei × N. mirabilis

Nepenthes natural hybrids recorded from Peninsular Malaysia and Singapore.

1. N. albomarginata × N. ampullaria *
2. N. albomarginata × N. gracilis
3. ? N. albomarginata × N. sanguinea
4. N. ampullaria × N. gracilis *
5. N. ampullaria × N. mirabilis *
6. N. ampullaria × N. rafflesiana *
7. N. benstonei × N. mirabilis
8. N. gracilis × N. mirabilis *
9. N. macfarlanei × N. ramispina
10. N. macfarlanei × N. sanguinea
11. N. mirabilis × N. rafflesiana *
12. N. ramispina × N. sanguinea

Two natural hybrids have been recorded from Singapore: N. × hookeriana and N. × trichocarpa. As such, all three species from Singapore are known to hybridise.

In Nepenthes of Sumatra and Peninsular Malaysia, Charles Clarke lists the natural hybrid N. gracillima × N. macfarlanei. At the time of the book's publication, N. alba was considered a heterotypic synonym of N. gracillima. Since then, however, N. alba has been elevated to a species. As both N. alba and N. gracillima occur on Mount Tahan, from which Clarke recorded the hybrid, it is unknown which taxon was involved in the cross.