found: Work cat.: McAlpine, R.G. American sycamore, 1973:p. 3 (American sycamore (Platanus occidentalis L.) p. 5 (The American sycamore, or simply sycamore, is often called buttonwood or buttonball and is sometimes referred to as the planetree; there are 3 species of sycamore in the U.S. but only American sycamore is important in forestry)
found: ITIS, Apr. 10, 2006(Platanus occidentalis L. -- American sycamore, sycamore)
found: NatureServe explorer, via WWW, Apr. 10, 2006(Platanus occidentalis, Sycamore)
found: The plants database, via WWW, Apr. 10, 2006(Platanus occidentalis L., American sycamore)
found: GRIN taxonomy for plants WWW site, Apr. 10, 2006(Platanus occidentalis L. Common names: American planetree, American sycamore, buttonball, buttonwood, eastern sycamore, sycamore)
