Benstonea jacobsii ( Stone 1984: 210 ) Callm., Buerki & A.P. Keim, 2014

Callmander, Martin W., Buerki, Sven, Keim, Ary P. & Phillipson, Peter B., 2014, Notes on Benstonea (Pandanaceae) from the islands of Halmahera, New Guinea and Sulawesi, Phytotaxa 175 (3), pp. 161-165 : 163

Benstonea jacobsii ( Stone 1984: 210) Callm., Buerki & A.P. Keim , comb. nov.

Basionym: Pandanus jacobsii Stone (1984: 210) . Type:— PAPUA NEW GUINEA. Hela Province: Near Waro airstrip, 20 km SSW of Kutubu, 6°31’S 143°10’E, 500–600 m, 15 October 1973, Jacobs 9281 (holotype, L [ L0050543 , L0050544 ] images seen) .

Notes: — Benstonea jacobsii was described by Stone (1984) in the genus Pandanus based on the small dimensions of its leaves (220 x 5 cm) and fruits (c. 10–11 cm in diam.) and the relatively smooth coarsely verruculose pileus. It is a small treelet (2–3 m) growing on limestone in the southeastern region of Papua New Guinea. Benstonea jacobsii can be easily distinguished from B. stenocarpa , by its habit (tall slender tree up to 10 m) and morphology (long and broad leaves, 400 x 11 cm) ( Fig. 1F ). Benstonea jacobsii is only known by the type specimen and is apparently restricted to limestone.

Figures

FIGURE 1. A–D. Benstonea verruculosa. E–G. Benstonea stenocarpa. H. Benstonea celebica. A, E. Axillary syncarp. B. Peduncle covered by prophylls. C, D, F. Details of pileus and stigmas. G. Habit. H. Polysyncarpic pending infructescence. A–C: From Callmander & Lasut 1551 (Photos: M. Callmander). F: Munzinger & Bau 6745 (Photo: J. Munzinger). E, G. Bau s.n. (Photos: B. Bau). H. Purwanto & al. PSU42 (Photo: Y. Purwanto & R. Polosakan).