Roystonea regia (Kunth.) O. F. Cook

Mehmud, Selim & Roy, Himu, 2021, Diversity and distribution of palms (Arecaceae) in Assam, India, Check List 17 (1), pp. 69-93: 86

publication ID 10.15560/17.1.69

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Roystonea regia (Kunth.) O. F. Cook


Roystonea regia (Kunth.) O. F. Cook  

Diagnostic characters. Stems solitary, erect, 20–30 m tall woody tree, and ca 50 cm in diameter, grey, irregular in size. Leaf pinnate; crownshaft ca 1 m long, green; rachis ca 2–3 m long; leaflets 42–51 cm long, linear. In- florescence below the leaf, upwards, 1.2–1.4 m long, branched; spathe green, cylindrical, ca 2 m long. Stami- nate flowers ca 6 mm, and pistillate flowers ca 3 mm; fruit round.

Flowering and fruiting. June to July and January to February, respectively.

Uses. Ornamental.

Material examined. WEST INDIES • Apr. 1904; A. H. Carties leg.; CAL. INDIA   Assam, Kamrup Metro , Ma- ligaon; 26°09′38″N, 091°42′37″E; alt. 63 m GoogleMaps   ; 18 Feb. 2018; S. Mehmud leg.; CH   .


Harvard University - Arnold Arboretum


University of Helsinki


Botanical Survey of India


Department of Botany, Swedish Museum of Natural History