Konservasieng
Conservation status. – With an EOO of 66 km 2, an AOO of 45 km 2, and 4 subpopulations, none of which are situated within the protected area network, P. benstoneoides is assigned a preliminary status of “ Endangered ” [EN B 1 ab (iii) + 2 ab (iii)] based on the IUCN Red List Categories and Criteria (IUCN, 2012). See P. beguinii for further justification of the IUCN Category. The conservation status is based on the currently available information on the geographical distribution of the species, and is justified because the extent of suitable habitat is expected to decrease in the coming years. However our remarks about the current inadequate knowledge of the flora of Halmahera and the possible establishment of conservation offset sites under P. beguinii above are applicable to P. benstoneoides.
Sumber: The genus Pandanus Parkinson (Pandanaceae) on Halmahera Island (Moluccas, Indonesia) with descriptions of three new species and a key to the species on the island
Deskripsieng
Haec species a congeneris inflorescentiis lateralibus axillaribus, staminibus liberis atque drupis unilocularibus stigma filiforme adpressum rectum undulatumve syncarpi apicem versus dirigens gerentibus distinguitur. Treelet to 4 - 8 (- 15) m tall, stem c. 15 cm in diam., with a large cone of few proproots at base, up to 2 m high. Leaves linear-attenuate, mostly (110 -) 130 - 150 (- 160) cm long, 4.5 - 5.5 cm wide in the middle, apex gradually attenuate, ending with a flagellum (c. 7 cm long); sub-coriaceous, glaucous abaxially; longitudinal veins visible on both surfaces; marginal prickles borne 4 - 9 cm above base to apex, black near sheath, antrorse, erect, 0.8 - 1.5 mm long in the lower third, 0.5 - 2 mm apart, 0.5 - 1 mm long in the mid-third, 1 - 3 mm apart, to 0.2 - 0.5 mm long in the distal third, 0.2 - 1 mm apart, appressed in the distal third; midrib armed from 35 - 50 cm from base, prickles> 1 mm long towards the apex, irregularly spaced but mostly 2 - 4 mm apart in the middle and 1 - 2 mm towards the apex; prickles generally absent on apical ventral pleats, sometimes 5 - 10 minute prickles towards the apex; sheath straight, (4 -) 5 - 7 (- 8) cm long, 4.5 - 6 cm wide at apex, 5 - 8 cm at base. Infructescence lateral, comprising a solitary patent syncarp born in the axil of the leaves, several present in each fertile leaf rosette; each syncarp ovoid, obtuse at apex, 3 - angled, 7 - 10 cm long, 5 - 7 cm wide, peduncle short, flattened dorso-ventrally, c. 7 cm long, 1 - 1.5 cm thick at apex, bearing multiple sub-coriaceous yellow bracts, broadly naviculate, the proximal ones c. 11 cm long, the distal one 7 cm long, crowded at peduncle apex, covering the syncarp. Drupes numerous, 500 - 800, 13 - 15 mm long, 3 - 4 mm wide, 4 - 5 mm thick, 1 - celled, 5 - 6 - angled, linear, pileus short, 1 - 2 mm high, with a flat to slightly concave apex with a rugose surface, bearing an appressed, straight to wavy, filiform stigma on its upper edge; stigma towards the syncarp apex, (10 -) 15 - 20 (- 30) mm long, 1 mm wide at base, 0.5 mm at apex; stigmatic groove ventral (adaxial), running along the proximal two thirds of the stigma. Endocarp bony, median, c. 4 mm long, obovate, lateral walls> 0.4 mm thick, extending laterally toward the apex of the drupe; proximal mesocarp c. 3 mm long, fibrous, distal mesocarp c. 3 - 5 mm long, chambered, seed locule c. 1.5 × 3 mm, obovate to ovate. Staminate inflorescence c. 18 cm long (immature); with a single terminal spike on a peduncle c. 7 cm long, covered with narrowly navicular yellow bracts, proximal ones c. 14 × 3 cm; distal ones 8 × 2 cm; spike yellow, c. 7 × 1.5 cm, linear, composed of crowded and congested flowers, composed of free stamens; stamens c. 5.5 mm long; filament, 4 × 0.5 - 0.7 mm, oblong, often larger at apex (c. 1 mm wide); anther c. 1.5 × 1 mm, sometimes apiculate with a long slender apiculus c. 1 mm long.
Sumber: The genus Pandanus Parkinson (Pandanaceae) on Halmahera Island (Moluccas, Indonesia) with descriptions of three new species and a key to the species on the island
