Nepenthes micramphora is very similar to N. bellii of northern Mindanao in terms of the morphology of its stem, lamina, and inflorescence.
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Nepenthes micramphora is closely allied to N. abgracilis and N. cid, both also from Mindanao, and together these species comprise the informal "N. micramphora group".
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Nepenthes micramphora gives its name to the informal "N. micramphora group", which also includes N. abgracilis from northeastern Mindanao and N. cid from north-central Mindanao.
Nepenthes clipeata | Nepenthes bokorensis | Nepenthes | Nepenthes rajah | Nepenthes mantalingajanensis | Nepenthes klossii | Nepenthes faizaliana | Nepenthes epiphytica | Nepenthes abgracilis | Nepenthes rigidifolia | Nepenthes mira | Nepenthes khasiana | Nepenthes kerrii | Nepenthes deaniana | Nepenthes cid | Nepenthes aristolochioides | Nepenthes viridis | Nepenthes ovata | Nepenthes mirabilis | ''N. micramphora'' group | Nepenthes spathulata | Nepenthes rhombicaulis | Nepenthes pitopangii | Nepenthes × kinabaluensis | Nepenthes holdenii | Nepenthes × harryana | Nepenthes dubia | Nepenthes burbidgeae | Nepenthes bellii | A skeletal revision of ''Nepenthes'' (Nepenthaceae) |