Alocasia scabriuscula N.E.Br.

Wong, Sin Yeng & Joling, Jyloerica, 2021, Checklist of aroids (Alismatales, Araceae) from Sabah (Malaysian Borneo), Check List 17 (3), pp. 931-974 : 942-943

Alocasia scabriuscula N.E.Br.

Material examined. MALAYSIA – Pedalaman • Nabawan, Pensiangan Forest, Sungai Kerilin ; 04°31′07″N, 116°19′39″E; 22 July 2016; Ubaldus & Baraham SAN 158024 ( SAN) – Pantai Barat • Penampang, Moyog along the road between Kota Kinabalu and Tambunan , 21 miles SE of Kota Kinabalu, W slopes of Crocker Range ; 05°50′N, 116°14′E; 460 m elev.; 26 September 1981; T. B. Croat 53114 ( MO, SAR) • Ranau, Kundasang, Kinabalu above Sosopodon ; [06°00′15″N, 116°33′00″E]; 1524 m elev.; 2 February 1962; W. Meijer SAN 29021 ( SAN) – Sandakan • Kinabatangan, Kalabakan Jungle Reserve , 04°27′01″N, 116°59′27″E; 300 m elev.; 7 April 1996; A. Hay 12006 (K, KEP, L, SAN) • Kinabatangan, Sukau , WWFM small plots; 05°31′37″N, 118°18′16″E; date un- known; G. Bassford & Reza A. GB 191 ( SAR) • same locality; date unknown; G. Bassford & Reza A. GB 191 ( SAR) • Kinabatangan, Maliau Falls, Gunung Rara Forest Reserve ; 04°30′00″N, 116°45′00″E; 9 April 1996; A. Hay 12045 (K, KEP, L, SAN) • Sandakan, Sepilok Forest Reserve ; 05°10′29′′N, 117°09′13′′E; 11 August 1994; G. Antok SAN 141501 ( SAN) • Sandakan, Sepilok Sungai Seguntor corner; 05°49′36″N, 117°57′04″E; 20 July 1990; J. Kulip & W. Meijer SAN 130939 ( SAN) – Tawau • Lahad Datu, Ulu Sungai Danum ; 05°01′36″N, 117°46′15″E; 3 July 1976; B. C. Stone et al. SAN 85307 ( SAN) • Lahad Datu, Danum Valley Field Centre, Orchid Trail to East trail; 04°40′00″N, 117°29′00″E; 150 m elev.; 4 August 1998; Magintan & Raya Magintan 573 ( AAU, SAN) • Lahad Datu, Baturong ; 04°37′25″N, 118°45′29″E; 28 Au- gust 1999; R. Kiew RK 4794 ( SING) • same locality, 28 August 1999, R. Kiew RK 4798 ( SING) .

Identification. Alocasia scabriuscula is a highly variable

species. Typical forms have ovatsagittate and thick, dark to mid grey-green leaves with the inner sides of the posterior costae very narrowly oblanceolate. The leaf blade is from distinctly though rather thinly leathery, to blades almost 5 mm thick and virtually succulent ( Hay 1998).

Distribution and ecology. Widespread in Sabah. Lowland forest to hill forest to ca. 1200 alt., often in disturbed areas, in swampy to well-drained sites, riverbanks, occasional on roadsides and in plantations.