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 Arenga westerhoutii Griff. Figure 2A Diagnostic characters. Solitary, unarmed, 12 m tall woody tree; trunk 25–30 cm in diameter. Leaf pinnate, erect, 4–5.5 m long; petiole green, with black fibre at base. Leaflets auriculate, alternate, 100–130 per side, 28–90 cm long, 5–8 cm wide, linear, adaxially dark green, abax- ially silvery white with brown indumentums and prominent midvein, auricle ca 3 cm long and apex serrated. Distribution. Cachar district; hilly areas. Material examined. INDIA • Arunachal Pradesh , Dibang Valley , Angolin ; 720 m ; 27 Aug. 2000 ; M . Bhaumik leg.; ASSAM 64953 . • Assam , Cachar , Borail WLS; 17 Jul. 2011 ; Hussain Ali Barbhuiyan leg.; ASSAM 85989 . • Assam , Cachar , Balicherra , Haflong Road ; 24°59′24.6″N , 092°45′10.7″E ; alt. 83 m ; 09 Nov. 2018 ; S . Mehmud leg. ; CH , ASSAM 96214 .