Penthorum Small 320×317 Medium 640×634 Large 1024×1014 Download Tiff Original 2423×2400 | (596.6 KB) Description Flowers greenish, 5-petaled. Keywords botanical, leaf, plant Galleries Flowers and Shrubs: P Source: Don E. Eyles, A Guide and Key to the Aquatic Plants of the Southeastern United States (Wahington D.C.:U.S. Government Printing Office, 1944) 65
