Pandanus dubius Spreng.

국표에 없다.

The following description is from Brink and Escobin (2003):

A dioecious, finally stout, sparingly branched tree, 8-20 m tall with numerous massive prickly prop roots 2-5 m long, but plants often remaining a rather slow-growing low-rosette shrub; bark brownish, rather smooth. Leaves thick-spongy-coriaceous, 1-5 m × 10-15 cm, rigid toward the base, margins and underside of midrib prickly, outer one-third folded down, veins tessellate with 140-170 parallel secondary veins and conspicuous tertiary cross veins. Male inflorescence a stout raceme 40 cm long, with up to 12 spikes subtended by softly leathery, yellow, boat-shaped, spiny bracts; spike creamy white, cylindrical, 12-20 cm long, consisting of staminate phalanges 7-14 mm long, with about six to 15 stamens (filaments 1-3 mm, anthers 3-6 mm long) borne subumbellately at apex of a column of 4-6 mm length. Female inflorescence a solitary, globular head, 20-35 cm in diameter, subtended by yellowish bracts; peduncle 60-85 cm long. Head composed of 50-90, relatively large carpellate phalanges with two to five carpels or of 1-celled drupes, usually a combination of these in one head; ripe carpellate phalange ellipsoid or obovoid, large, 9-13.5 cm × 4-7.5 cm × 4-5 cm, 1-2(-4)-celled, upper one-third free; upper mesocarp solid, 47 cm long, consisting of dense parenchyma traversed by longitudinal fibres; lower mesocarp fibrous and fleshy, 3-5 cm long; endocarp 20-35 mm long, hard, thin; stigmas large, often in a row and facing the apex of the syncarp. Seed broad ellipsoid, 10-16 mm long.

Distribution

Pandanus dubius is a perennial shrub or tree native from the Andaman Sea to the western Pacific region (Callmander et al., 2015). Outside its native range, it is used as an ornamental species (Brink and Escobin, 2003). P. dubius is reported from Asia, North America, Central America, the Caribbean and Oceania (Standley, 1928; Stone, 1971; Yen, 1974; Brink and Escobin, 2003; Herrera et al., 2010; Acevedo-Rodríguez and Strong, 2012; Lim, 2012; Botanical Survey of India, 2020; Encyclopedia of Life, 2020; IUCN, 2020; National Parks Board, 2020; New York Botanical Garden, 2020; Starr Environmental, 2020; USDA-ARS, 2020).

https://youtu.be/1GevzwaL7c0?t=1528