Download 1. Roystonea regia (Kunth) O. F. Cook 大王椰子(王棕) S

1. Roystonea regia (Kunth) O. F. Cook 大王椰子(王棕) (Photo 43)
Science, II, 12: 479. 1900; FGD 2: 463, fig. 326. 1991; FRPS 13(1): 129. 1991.
Large tree, to 30 m tall, dioecious. Stems solitary, to 50 cm in diam., grey-white, smooth, rings of leaf scars conspicuous when
young. Leaves pinnate, about 15 in number, to 5 m long, recurved; pinnae to 250 per side, arranged on different planes,
elongate lanceolate, 2-lobed at apices, to 90 × 4 cm; sheaths closed and forming a green, leathery crownshaft. Inflorescences
to 1.5 m, branched 3–4 orders. Flowers small, white, male flowers 6–7 mm, stamens 6; female flowers 3–3.5 mm. Fruits
subglobose, about 1.3 × 1 cm, dark-red. Seed 1, endosperm homogeneous.
Locality: Cultivated.
Distribution: SE USA, C Mexico, Caribbean, Mesoamerica, cultivated elsewhere.
Ecology: Flowering: Mar.–Apr.; fruiting: Oct.
Uses: Ornamental.