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P.petiolatum
| Habit : | A slender climber, glabrous, branches stout with rounded base, opaque above with the nerves obscure. |
| Leaves : | Large long-petioled, thinly coriaceous, rounded-ovate, acuminate, 7-nerved, nervules arching. |
| Spikes : | Fruiting spike 2.5 - 3.75 cm., fruiting peduncle very short, spike short cylindric. |
| Fruits : | Globose, 0.31 cm. diam. |
