Leuconotis eugeniifolius A DC

[From Greek, leukos = white and from Latin, eugeniifoius = Eugenia — like leaves]

Common names: Akargetah garah (Malay).

Fig. 266. Leuconotis eugeniifolius A. DC. From: KLU 6213. Field collector: Benjamin C Stone. 12 Feb 1967. Botanical identification: Markgraf. Geographical localization: Pahang, 500 ft., Bentong Sungai Pertin, Malaysia.

Physical description: It is a woody climber of the rainforests of Malaysia and Indonesia. Leaves:simple, decussate and without stipules. The petiole is 1.5 cm long, velvety and channeled. The blade is oblong-lanceolate, dark green, glossy, papery, velvety below, and 10cm x 2.8cm-11 cm x 3.5cm. The base of the blade is round and the apex is cuspidate in a 1 cm long tail. The margin is wavy and slightly recurved. The midrib is sunken above and raised below. The blade shows 12 pairs of secondary nerves which are indistinct above and showy below. The secondary nerves are connected by a conspicuous intramarginal nerve. The fruits are solitary, axillary, globose, and 1 cm-2cm in diameter. The fruit pedicel is 2 cm long (Fig. 266).

Pharmaceutical interest: The pharmacological potential of Leuconotis eugeniifolius A. DC. is unexplored. A number of indole alkaloids, including yohimbine, are known to occur in the leaves and stems of Leuconotis eugeniifolius A. DC. (Abe F etal., 1999).

Fig. 266. Leuconotis eugeniifolius A. DC. From: KLU 6213. Field collector: Benjamin C Stone. 12 Feb 1967. Botanical identification: Markgraf. Geographical localization: Pahang, 500 ft., Bentong Sungai Pertin, Malaysia.

Uses: In Indonesia, the latex of Leuconotis eugeniifolius A. DC. is used to expel worms. In Malaysia, the latex is used to treat yaws.

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