Memoirs of The New York Botanical Garden
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of Vascular Plants of Northeastern United States and adjacent Canada
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
- Fls 5–6-merous; stamen-tube with 10–12 anthers and 20–24 narrow lobes; ovary on a short disk; fr a drupe with a 5-locular stone; trees with bipinnate lvs. 5, warm part of Old World.