Nepenthes bongso is a tropical pitcher plant endemic to Sumatra, where it has an altitudinal distribution of 1000–2700 m above sea level. The specific epithet bongso refers to the Indonesian legend of Putri Bungsu, the spirit guardian of Mount Marapi.
Image: Nepenthes carunculata upper pitcher
A typical lower pitcher of N. bongso
Lower pitchers (developing, open, and dried)
Nepenthes inermis is a tropical pitcher plant endemic to the Indonesian island of Sumatra. The specific epithet inermis is Latin for "unarmed" and refers to the upper pitchers of this species, which are unique in that they completely lack a peristome.
Upper pitchers of N. inermis from Mount Belirang
Closeup of the pitcher mouth of N. inermis. The upper pitchers of this species are the only ones in the genus to completely lack a peristome.
An upper pitcher of N. × pyriformis