Related Species
An upper pitcher of N. gracilis (left) and N. reinwardtiana (right)| Character | N. angasanensis | N. mikei | N. tobaica |
|---|---|---|---|
| Habit | Produces offshoots from underground rhizomes | No rhizomes | No rhizomes |
| Spur | Forked | Fasciculate | Filiform |
| Inner margin of peristome | Teeth to 1.5–2 mm long | Teeth to 0.2-0.4 mm long | Teeth < 0.2 mm |
| Stem cross section | Cylindrical | Cylindrical | Cylindrical to obtusely triangular |
| Bracteoles | Sometimes near base of lowest pedicel only | Half way up every pedicel | At base or slightly below pedicel attachment, few |
| Pitcher glands | 300 / cm² | 150-180 / cm² | 200-250 / cm² |
| Pedicels | 1-flowered | 1-flowered | 2-flowered |
| Inflorescence (female) | 55–125 mm long, 9-17 flowers | 40–80 mm long, 4-10 flowers | 195–400 mm long, 30-50 flowers |
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 following is a portion of the resultant cladogram, showing part of "Clade 6". The sister pair of N. angasanensis and N. mikei has 79% support.
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The pitchers of N. tobaica are similar to those of N. adnata, although the stem and lamina are quite different.
Read more about this topic: Nepenthes Tobaica
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