New Naturalized Flowering Plant Records for the Flora of Niue

Field surveys of the flora of Niue have identified ten new records of naturalized plants and clarification of the status of an earlier record. Four new records are not known to have been cultivated in Niue, with three the herbs Cardamine flexuosa With., Dentella repens (L.) J.R.Forst. & G.Forst., and Strobilanthes reptans (G.Forst.) Moylan ex Y.F.Deng & J.R.I.Wood, and the fourth the liane Distimake quinquefolius (L.) A.R.Simões & Staples. Six species are cultivated and are now documented as naturalized with self‐sown progeny or vegetative spread. These are the timber tree Swietenia macrophylla King, the liane Stephanotis floribunda Jacques, and the palms Adonidia merrillii (Becc.) Becc., Linospadix monostachyos (Mart.) H.Wendl., and Livistona australis (R.Br.) Mart. Another cultivated plant, Gloriosa superba L., was collected from wild sites but may have established vegetatively as a garden discard. An obscure and earlier record of Cyperus gracilis R.Br. being naturalized is confirmed, as its original and only documentation is a brief and easily overlooked entry in a more general checklist of the weeds of western Polynesia published in 1988. There are supporting and annotated herbarium specimens in Allan Herbarium (CHR) for C. gracilis , with the first collection in 1965 by W. R. Sykes.