page_title: Nepenthes rhombicaulis
section_title: Related species
hierarchical_section_title: Nepenthes rhombicaulis / Related species
caption_attribution_description: Nepenthes rhombicaulis × Nepenthes spectabilis?
context_page_description: Nepenthes rhombicaulis is a tropical pitcher plant endemic to Sumatra. The specific epithet rhombicaulis is formed from the Latin words rhombicus, meaning "rhomboid", and caulis, "stem". It refers to the cross-sectional shape of the stem internodes.
context_section_description: Nepenthes rhombicaulis is very similar to N. gymnamphora in both morphology and growth habit. It is sympatric with this species on Mount Pangulubao. Nepenthes rhombicaulis also bears a close resemblance to N. hirsuta from Borneo.
  In 2001, Charles Clarke performed a cladistic analysis of the Nepenthes species of Sumatra and Peninsular Malaysia using 70 morphological characteristics of each taxon. The resultant cladogram placed N. rhombicaulis in an unresolved polytomy at the base of the Montanae/Nobiles clade, together with N. benstonei.
caption: A lower pitcher of N. rhombicaulis × N. spectabilis
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