Ptychosperma macarthurii (H.Wendl. ex H.J.Veitch) H.Wendl. ex Hook.f.
Hooker, J.D. (1884) Report on the Progress and Condition of the Royal Gardens at Kew, during the year 1882 : 55.
MacArthur Palm; Macarthur's Palm; Palm, MacArthur
Grows up to 9 m tall but usually flowers and fruits when smaller. Multistemmed or stems often clumped and usually surrounded by suckers.
Inflorescence 20-45 cm long bearing flowers in groups of three consisting of two male and one female flower. Male flowers with sepals 3, c. 1.5-2.5 mm long, yellow-green to light green; petals 3, c. 7 mm long, yellow-green to light green; stamens 23-40 per flower; ovary, style and stigma always well developed but the ovules are absent in the male flowers. Female flowers with sepals 3, 2 x 3 mm, cream-green; petals 3, 3-4 x 2-3.5 mm, cream-green; 3-6 staminodes present; stigma 0.5 mm llong, recurved.
Leaflets long and narrow, wider on older plants.