Pyramidanthe prismatica J Sinclair Hook f Thoms

[From Greek, puramis = pyramid and prisma-matos = thing sawn]

Physical description: It is a climber of the rainforest of Malaysia which grows from tree to tree to a length of 12 m. The bark is blackish and showily lenticelled.

Synonymy: Fissistigma cylindricum (Maingay) Merr., Melodorum prismaticum Hk. f. & Thoms.

Uses: In Malaysia, a decoction of the roots of Pyramidanthe prismatica (Hook. f. & Thoms.) J. Sinclair is drunk to treat diarrhea and snake bites. The pharmacological property of this plant is unknown. The plant may have disappeared before it is assessed for pharmacology.

Fig. 14. Pyramidanthe prismatica (Hook. f. & Thoms.) J Sinclair. From: KLU Herbarium 042520 and 15681 Field collector & botanical identification: Ahmad, Singapore, 1977.

Leaves: simple, alternate and exstip-ulate. The petiole is stout, 1 cm long and channeled. The blade is leathery, 14cm-20cm x 5cm-7cm, dark green on the surface, glossy and velvety underneath. The apex is shortly acuminate or acute and the base is round. The blade shows 12-14 pairs of secondary nerves with conspicuous internerves. The flower buds are axillary, golden velvety, 5cm-7cm long and conical. The calyx is disc-shaped, obscurely 3-angled and persistent in fruits. The petals are valvate, linear-lanceolate, the outer ones are 5cm-7cm long, and the inner one are ovate and 1 cm long. The stigmas are capitate and lobed. The fruits are ovoid, 2 cm x 1.5 cm, dark green and rugose (Fig. 14).

Fig. 14. Pyramidanthe prismatica (Hook. f. & Thoms.) J Sinclair. From: KLU Herbarium 042520 and 15681 Field collector & botanical identification: Ahmad, Singapore, 1977.

Warning: Caution must be taken as the toxic effects of this plant are unknown.

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