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P.sumatranum
| Habit : | Very robust and stout climber with thick branches, deeply furrowed when dry. |
| Leaves : | Quite glabrous, very robust, leaves 20-30 cm. very coriaceous oblong or linear-oblong acuminate 5-7 nerved at the very shortly cordate base and 3-nerved higher up, petiole 2.5 - 7.5 cm. |
| Spikes : | Fruiting spike 5 - 7.5 cm. very stout, pedicel glabrous as long as the globose apiculate fruit is broad. |
| Fruits : | Globose, apicular. |
