- Piedade, Maria Teresa Fernandez
- Piedade, Sônia Maria de Stefano
- Piedallu, A
- Piédallu, André
- Piedmont Directory Co.
- Piedmont Forestry Company.
- Piedmont Green Houses.
- Piedmont Greenhouses.
- Piedmont Plant Co.
- Piedra, Enrique
- Piedra, Priscila
- Piedrahia, Paolo
- Piedra-Malagón, Eva María
- Piedra-Malagón, Eva María
- Piedras, Fernanda Reinhardt
- Piedras, Sérgio
- Piedras, Sérgio R. N.
- Piehl, Martin A
- Piek, T
- Piekarski, Patrick
- Piekarz, Doug
- Piel (Island). Sea-fish hatchery.
- Piel, K M
- Piel, Octave.
- Piel, W H
- Piel, William H
- Pielichowska, Maria
- Pielou, E. C. (Evelyn Chris) 1924-
- Pienaar, Elizabeth
- Pienaar, Elizabeth F.
- Pienaar, Leon V. (Leon Visser), 1936-
- Pienaar, Richard N
- Pieniz, S.
- Pieńkowska, Joanna R.
- Pienkowski, R L
- Piepenbring, Meike
- Piepenburg, Dieter
- Pieper, Charles J.,
- Pieper, Charles John, 1887-
- Pieper, Evelyn
- Pieper, Harald
- Pieper, M
- Pieper, Rex D
- Pieper, Wagner W.
- Piepers, M. C. (Marinus Cornelis), 1835-1919
- Piepers, Nicole
- Pierallini, R
- Pierangeli, Maria Aparecida Pereira
- Pierantoni, Riccardo
- Pierantoni, U
- Pierantoni, Umberto
- Pierantoni, Umberto, 1876-
- Pierce Bulb Company.
- Pierce Seed & Mercantile Company.
- Pierce Seed Co.
- Pierce Seed Company.
- Pierce, A J
- Pierce, Andrew J
- Pierce, B. F.
- Pierce, B. N.
- Pierce, Brian L.,
- Pierce, Bryan E
- Pierce, C L
- Pierce, D. A.
- Pierce, David E.
- Pierce, Donald A.
- Pierce, E Lowe
- Pierce, F N
- Pierce, Frank
- Pierce, Frank Nelson.
- Pierce, Fred J
- Pierce, Glenn L.,
- Pierce, Graham J
- Pierce, Harold D
- Pierce, Harold G.
- Pierce, Howard Castner.
- Pierce, James C.
- Pierce, John
- Pierce, John H
- Pierce, Mac
- Pierce, Mary-Elizabeth
- Pierce, Matthew V.
- Pierce, Miriam.
- Pierce, N D F
- Pierce, Naomi
- Pierce, Naomi E
- Pierce, Newton B
- Pierce, Newton Barris, 1856-1916
- Pierce, Prince
- Pierce, R J
- Pierce, R. C. (Ronald C.)
- Pierce, R. W.
- Pierce, Robert A
- Pierce, Ron.
- Pierce, Roy G. (Roy Gifford), 1884-1958
- Pierce, S E
- Pierce, S K
- Pierce, Sidney K
- Pierce, Simon J
- Pierce, Sk
- Pierce, W. C.
- Pierce, W. Dwight (William Dwight), 1881-1967
- Pierce, Wendy (Wendy N.)
- Pierce, Wright M.
- Pierce, Wright M., Mrs.
- Piercey, Rebecca S.
- Piercey-Normore, Michele D.
- Piercey-Northmore, M. D.
- Piercy, Alma
- Pieri, Fabio Alessandro
- Piéri, J.-B.
- Pieri, M
- Pierini, Jorge O
- Pierini, Jorge Omar
- Pierini, Sandra Andréa
- Piermarocchi, Caterina
- Piérola y Flores, Nicolás de, 1788-1857
- Piéron, H
- Piéron, Henri
- Pieroni, Andrea
- Pierotti, H
- Pierotti, Heelio
- Pierotti, Helio
- Pierotti, Hello
- Pierotti, Hfelio
- Pierotto, Marcelo Javier
- Pierozan, MK
- Pierozzi, Pedro H. B.
- Pierpont, F. H.,
- Pierrard, G
- Pierrard, Gaston
- Pierrat, Benjamin
- Pierre De La Bathie, H
- Pierre, 19th cent-
- Pierre, C
- Pierre, E.
- Pierre, J
- Pierre, Jacques
- Pierre, J-F
- Pierre, Joachim Isidore, 1812-1881
- Pierre, Kimberley J. La
- Pierre, Louis 1833-1905
- Pierre, M L
- Pierre, Victor
- Pierrer, Rémy
- Pierres, Philippe Denys (Parijs)
- Pierret, Jean
- Piérri, V
- Pierron, Jean Antoine, fl 1780-1812
- Pierron, Sander, 1872-
- Pierrot, Leonardo Monteiro
- Pierrot-Bults, Annelies C.
- Piers, Harry, 1870-1940
- Piersig, Gustav Richard, 1857-1906
- Piersma, T.
- Piersol, George A.
- Piersol, George Arthur, 1856-1924
- Piersol, W. H. (William Hunter), 1873-1965
- Pierson, A.N. Inc.
- Pierson, Albert H. (Albert Halsey), 1877-1948
- Pierson, Bernice Frances
- Pierson, Bruce
- Pierson, Clara Dillingham.
- Pierson, D. L.
- Pierson, E. C.
- Pierson, Elizabeth D.
- Pierson, F. R.
- Pierson, F.R. Co.
- Pierson, J M
- Pierson, L
- Pierson, Marissa
- Pierson, R R
- Pierson, Roger
- Pierson, Todd W
- Pierson, Willard J.
- Piertney, Stuart B
- Piesch, David, 1802
- Piesman, Joseph
- Piesschaert, Frederic
- Piesse, Alexander C.
- Piesse, Edmund Leolin
- Piester, Everett A.
- Piestre et Delamollière.
- Pieszczek, Adolf.
- Pieszko, Gelina
- Piet, D
- Pieter van der Aa.
- Pieters, A. J. (Adrian John), 1866-1940
- Pieters, P. E.
- Pieterse, Sander
- Pieterse, Sander M
- Pieterse, Welma
- Pietersen, Darren W
- Pietersen, E
- Pietersen, Errol W
- Pieters-Wheeler Seed Company.
- Pieters-Wheeler Seeds (Firm)
- Pietkiewicz, M V
- Pietrantuono, Ana
- Pietraszewski, Dariusz
- Pietraszko, Monika
- Pietrek, Alejandro G
- Pietrelli, Loris
- Piétrement, Charles Alexandre, 1826-
- Pietri, Ana Paula
- Pietro, da Cortona, 1597-1669
- Pietro, Marc di,
- Pietrobom, Marcio Roberto
- Pietrobom, Rita de Cássia Violin
- Pietrobon, Anna Julia
- Pietrogiovanna Bronca, José Alfredo
- Pietrokovsky, Silvia M
- Pietropaolo, J. (James)
- Pietropaolo, P.A.. (Patricia Ann)
- Pietrusewsky, Michael
- Pietruski, Stanisław Konstanty, 1811-1874
- Pietruszka, Robert D
- Pietrykowska-Tudruj, Ewa
- Pietrzak, James E
- Pietsch, Lysle R.
- Pietsch, T J
- Pietsch, T W
- Pietsch, Theodore W
- Pietsch, Werner
- Pietschmann, V
- Pietschmann, Vicktor
- Pietschmann, Victor
- Pietschmann, Viktor
- Piette, Édouard, 1827-1906
- Piette, Geneviève
- Pietz, Pamela J.
- Pievani, Telmo
- Pifano, Daniel Salgado
- Piferrer, Antonio Ortega
- Piffer, Pedro Ribeiro
- Pig, M
- Pigden, Wallace J.,
- Pigeaux, Dr.
- Pigford Nurseries.
- Pigford Nursery.
- Pigg, K B
- Pigg, Kathleen B
- Piggin, C M
- Piggott Nurseries.
- Piggott, A G
- Piggott, Ben
- Piggott, John W.
- Pigg-Strangeways, Thomas Strangeways.
- Pignal, M
- Pignal, Marc