Begonia watuwilensis Girmansyah (2009: 70)

Ardi, Wisnu H., Chikmawati, Tatik, Witono, Joko R. & Thomas, Daniel C., 2018, A synopsis of Begonia (Begoniaceae) of Southeastern Sulawesi including four new species, Phytotaxa 381 (1), pp. 27-50 : 47-48

11. Begonia watuwilensis Girmansyah (2009: 70) ( Figures 1 & 12 )

Sect. Petermannia

Type:— INDONESIA. Sulawesi, Southeast Sulawesi: North Kolaka Regency, Uluiwoi District, Sanggona Village , Mt. Watuwila , 14 May 2008, D. Girmansyah 914 (holotype BO!; isotypes E!, K!, L, US).

Habitat:— Primary lowland and upland rainforest, on limestone rock or steep slopes on limestone soils, in light to dense shade, at ca. 100–1200 m elevation.

Distribution: — Indonesia; endemic to Sulawesi, Southeast Sulawesi (only known from Gunung Watuwila and Matarombeo).

Notes: — Begonia watuwilensis has protandrous inflorescences, which separates it from the vast majority of species in the large section Petermannia (see Moonlight et al. 2018; Thomas et al. 2018).

Provisional IUCN conservation assessment: — Endangered EN B1ab(iii),B2ab(iii) ( Thomas et al. 2018).

Additional specimens examined: — INDONESIA. Sulawesi, Southeast Sulawesi: North Kolaka , 17 Mar. 2006, H.Wiriadinata et al. Deden 574 ( BO) ; North Kolaka, Ranteangin subdistrict, Tinukari village , 04 Aug. 2009. A.Hidayat et al. AH 4149 ( BO) ; North Kolaka, Ranteangin subdistrict, Tinukari village , 17 Dec. 2009, E.A. Widjaja & Agus Suyadi EAW 8881 ( BO) ; Matarombeo, close to Mataraki bridge, 117 m, 18 Feb. 2017, W.H Ardi WI 169 ( BO, KRB, SING) ; Matarombeo, Telaga biru, ca. 14 km west of Mataraki bridge, 115 m, 19 Feb. 2017, W.H. Ardi WI 171 ( BO, KRB, SING) ; Matarombeo , ca. 20 km W of Mataraki bridge, 194 m, 19 Feb. 2017, W.H Ardi WI 177 ( BO, KRB, SING) ; cultivated at Bali Botanic Garden from material collected on Mt. Watuwila , 4 Apr. 2009, D.C Thomas & W.H. Ardi DCT 09-55 ( BO, E) .

Figures

FIGURE 1. Distribution map.A. Overview of Sulawesi. B. Distributions of B. aptera, B. johntania, B. mekonggensis, and B. ozotothrix.C. Distributions of B. balgooyi, B.flacca, B. matarombeoensis, and B. watuwilensis. D. Distributions of B.incudiformicarpa, B. iskandariana, and B. tumburanoensis. Specimen location information was georeferenced using the GeoNames geographical database at http://www. geonames.org/.

FIGURE 12. Begonia watuwilensis. A. Habit; scale bar: 30 cm. B. Stipules; scale bar: 2 cm. C. Adaxial leaf lamina; scale bar: 20 cm. D. Inflorescence with male flowers; scale bar: 3 cm. E. Infructescences; scale bar: 2 cm F. Male flowers, front view; scale bar: 10 mm. G. Female flower, front view; scale bar: 10 mm. H. Ovary, cross-section of middle part; scale bar: 5 mm. A from Ardi, W.H. 177, D–J from Ardi, W.H. 171; C, K, L from Ardi, W.H. 169. (Photos: W.H. Ardi).