Piptospatha elongata spathe; photo © S.Y. Wong & P.C. Boyce
Pistia stratiotes juvenile plants, floating; photo: S.L. Winterton
Pistia stratiotes mature plants, floating; photo: S.L. Winterton
Pistia stratiotes inflorescence; photo: S.L. Winterton
Pistia stratiotes flower; photo: S.L. Winterton
Plagiomnium affine; photo © Kirill Ignatyev
Plagiomnium cuspidatum; photo © Scott Zona
Plagiomnium insigne; photo © Kirill Ignatyev
Plagiomnium medium; photo © Scott Zona
Pogostemon erectus, emersed; photo: S.L. Winterton
Pogostemon erectus, submersed; photo: S.L. Winterton
Pogostemon erectus inflorescence; photo: S.L. Winterton
Pogostemon helferi, emersed; photo: S.L. Winterton
Pogostemon helferi, submersed; photo: S.L. Winterton
Pogostemon stellatus, emersed; photo: S.L. Winterton
Pogostemon stellatus, submersed; photo: S.L. Winterton
Pogostemon stellatus inflorescence; photo: S.L. Winterton
Pogostemon stellatus flowers; photo: S.L. Winterton
Pogostemon yatabeanus, emersed; photo: S.L. Winterton
Pogostemon yatabeanus inflorescence; photo: S.L. Winterton
Pontederia cordata, emersed; photo: S.L. Winterton
Pontederia cordata inflorescence; photo: S.L. Winterton
Pontederia cordata flowers; photo: S.L. Winterton
Pontederia cordata flower; photo: S.L. Winterton
Pontederia rotundifolia; drawing © University of Florida/IFAS Center for Aquatic and Invasive Plants, used with permission
Potamogeton gayi, submersed; photo: S.L. Winterton
Potamogeton javanicus, submersed; photo: S.L. Winterton
Potamogeton sp., floating; photo: S.L. Winterton
Potamogeton sp. spike; photo: S.L. Winterton
Potamogeton sp. spike apices from above; photo: S.L. Winterton