Appendix 8. Threatened and significant plant species on the Tiwi Islands Previous studies have discussed the status and distribution of plant species of conservation significance across the Tiwi Islands (e.g. Woinarski et. al, 2000; Woinarski et. al, 2003; Liddle & Elliott, 2008). Of the approximately 1 480 plant taxa recorded from the Tiwi-Coburg Bioregion, 11 are thought to be endemic to the Islands, and a further 17 species are known in the NT only from the Islands, with 2 of these representing the only known Australian occurrence of the taxa (Table 8-3). Nineteen Tiwi plant species are listed as threatened within the Northern Territory (Territory Parks and Wildlife Conservation Act) and six of these are listed as nationally threatened (Environment Protection and Biodiversity Conservation Act) (Table 8-1). Table 8-1. Threatened plants recorded from the Tiwi Islands, listed under the Environment Protection and Biodiversity Conservation Act (EPBCA) and/or Territory Parks and Wildlife Conservation Act (TPWCA). For TPWCA status, (e) denotes endemic to the Tiwi Islands; and (d) denotes highly disjunct species with the entire NT population restricted to the Tiwi Islands. Status codes: CR=critically endangered; EN=endangered; V=vulnerable. Scientific Name Family TPWCA EPBCA Habitat sp. Bathurst Burmannia BURMANNIACEAE EN (e) EN ever-wet rainforest Island (R.J.Fensham 1021) Calochilus caeruleus ORCHIDACEAE V paperbark swamp Cephalomanes obscurum HYMENOPHYLLACEAE EN ever-wet rainforest Cycas armstrongii CYCADACEAE V eucalypt open forest Dendromyza reinwardtiana SANTALACEAE V (d) ever-wet rainforest Elaeocarpus miegei ELAEOCARPACEAE CR (d) ever-wet rainforest Endiandra limnophila LAURACEAE V ever-wet rainforest Freycinetia excelsa PANDANACEAE V ever-wet rainforest Freycinetia percostata PANDANACEAE V ever-wet rainforest Garcinia warrenii CLUSIACEAE EN (d) rainforest Hoya australis subsp. APOCYNACEAE V (e) V coastal rainforest oramicola (syn. Luisia corrugata L. ORCHIDACEAE V ever-wet rainforest teretifolia) Mapania macrocephala CYPERACEAE V ever-wet rainforest Mitrella tiwiensis ANNONACEAE V (e) V ever-wet rainforest Tarennoidea wallichii RUBIACEAE EN (d) rainforest Thrixspermum congestum ORCHIDACEAE V (d) ever-wet rainforest Typhonium jonesii ARACEAE EN (e) EN eucalypt open forest Typhonium mirabile ARACEAE EN (e) EN eucalypt open forest Xylopia monosperma ANNONACEAE EN (e) EN ever-wet rainforest Tiwi Island Economic Development - Bio-Physical Resources of North East Bathurst Island (Technical Report) 215 .