|Zingiber ultralimitale Ardiyani & A.D.Poulsen|
Ardiyani, Newman & Poulsen, 2017.
Gardens' Bulletin Singapore. 69(2);
Zingiber Mill. is distributed from India to the Pacific but only a few species are known from east of Wallace’s Line, whereas the area to the west is rich in species. A recent collection from limestone at Bantimurung, South Sulawesi, Indonesia represents a new eastern species, Zingiber ultralimitale Ardiyani & A.D.Poulsen, which is described, illustrated, and barcoded using three of the four barcoding loci (rbcL, trnH-psbA and ITS). Placement of this species using morphological evidence is ambiguous but a combination of evidence from morphology, pollen anatomy and molecular analysis indicates that it belongs to Zingiber sect. Zingiber.
Keywords: Bantimurung, DNA barcode, Indonesia, limestone, Sulawesi, Wallacea
Zingiber ultralimitale Ardiyani & A.D.Poulsen, sp. nov.
This species is distinct from all others by the following combination of characters: narrow long loose green bracts, bright yellow flowers, and large free yellow lateral staminodes.
―TYPE: Indonesia, originally collected from South Sulawesi Province, Bantimurung NP, ... and cultivated as RBGE 20091017*A, flowering material vouchered on 12 June 2013 as Newman, M.F. 2552 (holotype BO; isotype E). (Fig. 2, 3)
Etymology. The specific epithet ultralimitale means ‘on the other side of the border’, referring to the occurrence of this species east of Wallace’s Line.
Ecology and habitat. Limestone cliffs and boulders in forest, lowlands at c. 300 m. During the first year of cultivation in Edinburgh, it was discovered that the species has a dormancy period during which it survives entirely underground.
M. Ardiyani, M.F. Newman and A.D. Poulsen. 2017. A New Species of Zingiber (Zingiberaceae) east of Wallace’s Line. Gardens' Bulletin Singapore. 69(2); 189 - 199.