Nepenthes ovata × N. spectabilis is known to occur along the summit trail of Mount Pangulubao. This hybrid produces pitchers roughly intermediate in appearance between its parent species. The peristome is flattened and expanded, but to a lesser degree than in N. ovata. The speckles of N. spectabilis are present, but the pitchers have a much lighter colouration. Most examples of this hybrid grow terrestrially and some climb into the forest canopy. N. ovata × N. rhombicaulis has also been recorded from the mountain.