Benstonea stenocarpa (Solms) Callm. & Buerki

Callmander, Martin W., Lowry Ii, Porter P., Forest, Félix, Devey, Dion S., Beentje, Henk & Buerki, Sven, 2012, Benstonea Callm. & Buerki (Pandanaceae): characterization, circumscription, and distribution of a new genus of screw-pines, with a synopsis of accepted species, Candollea 67 (2), pp. 323-345 : 339

41. Benstonea stenocarpa (Solms) Callm. & Buerki , comb. nova.

≡ Pandanus stenocarpus Solms in Ann. Jard. Bot. Buitenzorg 3: 91. 1883.

Typus: INDONESIA. WestPapua ( New Guinea): Mts. Arfak , ad Hatam , VI.1875, Beccari s.n. (holo-: FI-B [ FI003 937 : ErbarioBeccari 11486]! ; iso-: B [ B100279929 ] image seen).

= Pandanus acicularis H. St. John in Pacific Sci. 27: 44. 1973. Typus: PAPUA NEW GUINEA. MorobeDist.: Sattelberg, 30.VII.1938, M.S. Clemens 8578 (holo-: B [ B100279966 ] image seen) , syn. nov.

= Pandanus misimaensis B. C. Stone in Fed. Mus. J. 23: 54. 1978. Typus: PAPUA NEW GUINEA: Misima Island, Mt. Sisa , 19.VII.1956, Brass 27401 (holo-: L [ L0050582 ] image seen) , syn. nov.

= Pandanus gladiator B. C. Stone in Gard. Bull. Singapore 36: 209. 1984. Typus: INDONESIA. Sulawesi: Mt Roroka Timbu , c. 80 km SSE of Palu, 11.V.1979, Vogel 5287 (holo-: BO ; iso-: L [ L0332713 ] image seen, KLU!), syn. nov.

Distribution and ecology. – Benstonea stenocarpa grows in lowland to submontane rainforests (from sea level up to 1300 m). It is distributed from the Moluccas through New Guinea and Bismarck archipelago to the Solomon Islands ( KEIM, 2012).

Observations. – This species has recently been reviewed by KEIM (2012), who adopted a broad species concept, including as synonyms several entities spanning from the Mollucas (Halmahera Isl.) through the Bismark Archipelago to the northern part of the Solomon Island (Bougainville) (see KEIM, 2012 and Appendix 1). Among those synonyms, Pandanus misimaensis was regarded as a nomen nudum by KEIM (2012), but in fact the name was validly published by STONE (1978: 54). Another species, P.gladiator B. C. Stone , not mentioned in Keim’s taxonomic review, shares all the morphological characters of P.stenocarpus , including its typical beaked styles (see STONE, 1983a: 210, Fig. 4 ), and is therefore considered as a synonym.

Figures

Fig. 4. – Infructescences and details of stigmas of species of Benstonea Callm. & Buerki. A. Benstonea affinis (Kurz) Callm. & Buerki; B. Benstonea gibbsiana (Martelli) Callm. & Buerki; C. Benstonea ornata (Solms) Callm. & Buerki; D. Benstonea pachyphylla (Merr.) Callm. & Buerki. [Photos: M. W. Callmander]