Benstonea Callm. & Buerki (Pandanaceae): characterization, circumscription, and distribution of a new genus of screw-pines, with a synopsis of accepted species Author Callmander, Martin W. Missouri Botanical Garden, P. O. Box 299, St. Louis, MO, 63166 - 0299, U. S. A. and Conservatoire et Jardin botaniques de la Ville de Genève, CP 60, CH- 1292 Chambésy, Switzerland. martin.callmander@mobot.org Author Lowry Ii, Porter P. Missouri Botanical Garden, P. O. Box 299, St. Louis, MO, 63166 - 0299, U. S. A. and Département Systématique et Evolution (UMR 7205), Muséum National d’Histoire Naturelle, case postale 39, rue Cuvier 57, 75231 Paris (Cedex) 05, France. Author Forest, Félix JodrellLaboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 DS, United Kingdom. Author Devey, Dion S. JodrellLaboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 DS, United Kingdom. Author Beentje, Henk Herbarium, Library, Art & Archives, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 DS, United Kingdom. Author Buerki, Sven JodrellLaboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 DS, United Kingdom. text Candollea 2012 2012-12-01 67 2 323 345 journal article 10.15553/c2012v672a12 2235-3658 5790002 1. Benstonea adinobotrys (Merr. & L. M. Perry) Callm. & Buerki , comb. nova. ≡ Pandanus adinobotrys Merr. & L. M. Perry in J. Arnold Arbor. 21: 175. 1940 . Typus:INDONESIA. Papua (New Guinea ): 15 km SW of Bernhard Camp , Idenburg River , I.1939 , L.J. Brass 12077 ( holo- : A [ A00019999 , A000120000 ] images seen ; iso- : BRI ). = Pandanus congregatus H. St. John in Pacific Sci. 27: 44. 1973 . Typus: INDONESIA. Papua (New Guinea) : Hunsteinspitze , 28.II.1913 , Ledermann 11117 (holo-: B [ B100 367676 ] image seen), syn. nov. = Pandanus ketele B. C. Stone in J. Arnold Arbor. 64: 312. 1983 . Typus: PAPUA NEW GUINEA . SouthernIsland Prov.: Tary Valley , IX.1981 , Stone & Rose 15005 ( holo- : PH [ PH00018278 , PH00018279 , PH00018280 ] images seen ; iso- : K [ K000781425 ]!, PH [ PH00018281 , PH00019091 carpo.] images seen) , syn. nov. = Pandanus lustrorum B. C. Stone in J. Arnold Arbor. 64: 313. 1983 . Typus: PAPUA NEW GUINEA . WestSepik Prov.: Telefomin , III.1975 , Womersley & Waikabu NGF 48718 ( holo- : KLU ! ; iso- : BRI , LAE [ LAE222061 ] image seen) , syn. nov. Distribution and ecology . – Benstonea adinobotrys occurs from (400-) 1400-2250 m in humid forest ( JEBB, 1992 ). It is known in Indonesia ( Sulawesi , West Papua ) and Papua New Guinea. Observations. – This taxon comprises a complex that includes several “morpho-species” that have been described based on slight variations in leaf length and width, and the dimensions and number of syncarps. As stated by STONE (1983c) , the “limits of variation within members of this group are still not very well understood, and further field study of them is desirable”. The taxonomic revision of Pandanaceae for the region currently being undertaken by Ary Keim and collaborators will hopefully clarify this matter. Some of the names placed in synonymy above may represent entities that justify recognition at the species level, in which case new combinations in Benstonea will be required.