Summary. A new endemic species of Olearia, O. dibrachiata (Compositae: Astereae: Hinterhuberinae), from Papua (Indonesia), is described and illustrated. It is compared with the other New Guinean species possessing malpighiaceous ‘T’-shaped hairs.
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Acknowledgements
The financial and logistical support of Rio Tinto and P.T. Freeport Indonesia for the Mt Jaya project is gratefully acknowledged. While in the field the staff of the Department of the Environment of P.T. Freeport Indonesia continued to provided support and facilities, without their assistance much of the work would not have been possible. Support of our associate institutions in Indonesia, the Plant Diversity Centre, Manokwari, Herbarium Bogoriense, and the Kebun Raya, Bogor was critical to the success of the project, particularly the assistance in the field of Teguh Triono and Arief Hidayat (BO), Charlie Heatubun and Elisa Wally (MAN), and Damianus Tekege, Ode Kasmin and Pratita Puradayatmika (P.T. Freeport Indonesia). The authors would also like to thank the Director of the National Herbarium of the Netherlands, Leiden Branch, for a loan of collections of Olearia, and the Curator of Herbarium Bogoriense for a loan of many Compositae. Hazel Wilks is thanked for the illustration of the species. The comments of the anonymous referees on an earlier draft of the paper were appreciated.
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Appendix 1
Appendix 1
Selected material examined of other taxa of New Guinean Olearia with malpighiaceous T-shaped leaf hairs. All material seen in K unless otherwise indicated.
Olearia exilis S. Moore. papua (indonesia). Mt Carstensz, Camp [XII to XIII], 1912 – 1913, Kloss s.n. (isotype K, cited by Koster 1966).
Olearia exilis S. Moore var. subacuta J. Kost. papua (indonesia). Wissel Lakes Region, 31 July 1939, Eyma 4993 (BO!, L!); Wissel Lakes Region, Enarotali, 1750 m, 8 Aug. 1939, Eyma 5082 (holotype L!); Mt Carstensz, Camp XX, Bijertsberg, 3200 – 3600 m, Nov. – Dec. 1936, Wissel 183 (BO!).
Olearia monticola F. M. Bailey var. cuneata J. Kost. papua new guinea. Simbu Province: Mt Wilhelm, E slopes, 2770 m, 15 July 1959, Brass 30525; Pengagl Creek, 5°45'S, 145°05'E, 23 Aug. 1964, Sayers & Millar NGF 19840; ibid. 8900 ft [2714 m], 25 Aug. 1964, Sayers & Millar NGF 19906; Eastern Highlands Province: Marafunga, about 20 miles NW or Goroka, 8600 ft [2622 m], Hartley 13205 (isotype); Fatima River Valley, Marafunga, 6°05'S, 145°15'E, 7700´ [2348 m], 27 May 1965, Womersley NGF 24580.
Olearia monticola var. grandifolia J. Kost. papua new guinea: Eastern Highlands Province: Mt Michael, 3300 m, 31 Aug. 1959, Brass & Collins 31263 (isotype); Southern Highlands Province: Mendi sub-distr., Kaguba, 14 m Tambul to Mendi, 6°06'S, 143°40'E, c. 9000 ft, Coode & Katik NGF 32972.
Olearia monticola var. monticola. papua new guinea. Milne Bay Province: N slopes of Mt Dayman, Maneau Range, 2350 m, 10 June 1953, Brass 22867; Mt Simpson, 9000 ft [2744 m], 28 Oct. 1947, Cruttwell 46; Mt Maneau, 7000 ft [2134 m], 22 June 1956, Cruttwell 732; Goilala sub-distr., between Mt Dickson and Kuputivava, 8°20'S, 147°02'E, 8500 ft [2592 m], 12 Feb. 1964, Hartley 12017; NE outlying ridge of Mt Simpson massif, 10°02'S, 149°40'E, c. 1980 m, 16 July 1969, Pullen 7812; Between Mt Dayman and Mt Mon, of Boneau village, 9°53'S, 149°20'E, c. 2070 m, Pullen 8018; Raba Raba Distr.: junction of Punpuniwa and Mayu Rivers, Mt Suckling complex, 9°44'S 149°2'E, 1750 m, Stevens & Veldkamp LAE 54006.
Olearia pachycephala J. Kost. papua new guinea. Milne Bay Province: N slopes of M. Dayman, Maneau Range, 2350 m, 10 June 1953, Brass 22869 (isotype).
Olearia vernonioides C. T. White & W. D. Francis. papua new guinea. Central Provinces: Main range NW of the Gap, c. 8000 ft [2439 m], 22 Jan. 1936, Carr 15225; Owen Stanley Range, 7400 ft [2256 m], Feb. 1923, Lane Poole 359 (isosyntype); Owen Stanley Range, 6000 ft [1829 m], 23 Feb. 1923, Lane Poole 368 (isosyntype); ibid., c. 6000 ft [1829 m], Feb. 1923, Lane Poole s.n. (possible isosyntype — a duplicate of 368).
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Hind, D.J.N., Johns, R.J. Olearia dibrachiata (Compositae: Astereae: Hinterhuberinae), a new species from Papua (Indonesia). Contributions to the Flora of Mount Jaya, XX. Kew Bull 69, 9515 (2014). https://doi.org/10.1007/s12225-014-9515-z
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DOI: https://doi.org/10.1007/s12225-014-9515-z