| 2 | Flowers 15–19 mm long; bracts 3–4 mm wide, narrowly deltoid, caducous; leaves 5–7 foliolate | N. fordii |
| – | Flowers 20–32 mm long; bracts 4–7 mm wide, deltoid-lanceolate, persistent; leaves 7–17 foliolate | N. speciosa |
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