Osmoxylon mariannense is a spindly, soft-wooded tree to 10 m (33 ft) in height. Ascending, gray-barked branches bear leaf scars. Leaves vary in size, are palmately-lobed, 30 cm (12 in) long and 50 cm (20 in) wide. The 7 to 9 lobes are coarsely toothed and have a depressed mid-vein. Leaves are...