Original: ISBN 0-935-86830-5 / ISBN 978-0-935-86830-2 They have large evergreen leaves that are either palmately ('fan-leaved') or pinnately ('feather-leaved') compound and spirally arranged at the top of the stem.
Simplified: They have large evergreen leaves that are either 'fan-leaved' or 'feather-leaved' and  arranged in a spiral at the top of the trunk.