Diversity and distribution of palms (Arecaceae) in Assam, India Author Mehmud, Selim Author Roy, Himu text Check List 2021 2021-01-13 17 1 69 93 http://dx.doi.org/10.15560/17.1.69 journal article 10.15560/17.1.69 1809-127X 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 ; 18 Feb. 2018 ; S . Mehmud leg.; CH .