Alocasia reginula

Wong, Sin Yeng & Joling, Jyloerica, 2021, Checklist of aroids (Alismatales, Araceae) from Sabah (Malaysian Borneo), Check List 17 (3), pp. 931-974 : 941-942

Alocasia reginula A.Hay

Figure 2E

Material examined. MALAYSIA – Tawau • Lahad Datu, Tabin Wildlife Reserve KM 16 on road Headquarters area ; 05°11′28″N, 118°37′06″E; 26 September 1998; F. Borchsenius 542 ( SAN, BORH) • Lahad Datu, Tabin Wildlife Reserve Road to core Area , km 15.9 along logging area to the N; 05°14′30″N, 118°50′16″E; 29 October 1998; F. Borchsenius 577 ( BORH, SAN) • same locality; 91.44 m (300 ft.) elev.; 25 August 2000; Pius G. Dauni, S. Tawadong T. SAN 143438 ( AAU, K, NSW) .

Identification. Alocasia reginula was described from cultivated material of unknown origin ( Hay 1998). Since then, it has been discovered to be endemic to Tabin Wildlife Reserve. The species is distinguished by the leaf blade thickly coriaceous, almost completely peltate save for a shallow retuse notch between the tips of the connate posterior lobes. The adaxial surface of the leaf blade is

very dark matt green and the abaxial is paler and flushed purple ( Hay 1998).

Distribution and ecology. Endemic to Sabah, known only from Tabin Wildlife Reserve. Heavily shaded karst cliffs.