- Pisso-Florez, Gustavo Adolfo
- Pissot, Henry J.
- Pissot, Jean,
- Pissot.
- Pistarino, Annalaura
- Pister, Edwin P
- Pistocchi, Chiara
- Pistocchi, Rossella
- Piston, D W
- Pistone, Estela
- Pistori, Raquel Eduarda Trevisan
- Pistrang, L A
- Pišút, Ivan
- Pita, Cristina
- Pita, Francisco Antonio de Oliveira
- Pita, Jorge
- Pita, M T
- Pita, Pablo
- Pita, Patrícia B.
- Pita, Ricardo
- Pita, Sebastián
- Pita-Barbosa, Alice
- Pitacco, Piero
- Pitacco, Valentina
- Pitaktunsakul, Piyaporn
- Pitale, Reshma
- Pitale, Reshma D
- Pitard, J.
- Pitassy, Diane
- Pitavin Dahlia Garden.
- Pitcairn, M J
- Pitcher & Manda.
- Pitcher, Arthur Dunn 1880-1923
- Pitcher, B.
- Pitcher, C R
- Pitcher, E
- Pitcher, F
- Pitcher, James R.
- Pitcher, John A.
- Pitcher, John.
- Pitcher, Kenneth
- Pitcher, Mac
- Pitcher, Zina, 1797-1872
- Pitchford, G. W.
- Pitchford, Laura A
- Pitchlynn, Paul Peter, 1891-
- Pitchon, Ana
- Pitelka, Dorothy R
- Pitelka, Dorothy R. (Dorothy Riggs), 1920-
- Pitelka, F A
- Pitelka, Frank A
- Pitelka, Frank A.
- Pitelli, Robinson Antonio
- Pitelli, Robinson Antônio
- Piterāns, Uģis
- Piterkina, Tatyana V
- Pitfield, Robert L.
- Pitfield, Robert Lucas, 1870-
- Pither, Jason
- Pitisopa, Fred
- Pitkänen, Kati
- Pitkänen, Timo
- Pitkin J. M.
- Pitkin, B R
- Pitkin, J. M.
- Pitkin, L M
- Pitkin, Linda M
- Pitkow, Ronald B
- Pitman, C. B.
- Pitman, Charles Charles Robert Senhouse Pitman 1890-1975
- Pitman, Charles Edward
- Pitman, Emma Raymond
- Pitman, G M
- Pitman, James C
- Pitman, Janet K.
- Pitman, John H
- Pitman, M. R. P. L.
- Pitman, Michael
- Pitman, Nigel
- Pitman, Nigel C A
- Pitman, Robert L
- Pitman, Sheryn
- Pitman-Moore, Inc.
- Pitney, Kenneth.
- Pitocchelli, Jay
- Pitogo, Kier Mitchel
- Pitol, DL.
- Pitombo, Fábio B.
- Pitopang, Ramadanil
- Pitrat, M
- Pitrè, Giuseppe, 1841-1916
- Pitriana, Pipit
- Pitruzzello, Pietro
- Pitsko, Leigh
- Pitsoli, Theodora
- Pitt, A
- Pitt, Elizabeth.
- Pitt, Frances, 1888-1964
- Pitt, J I
- Pitt, Jerome
- Pitt, Justin A.
- Pitt, L J
- Pitt, Leslie John
- Pitt, Lois J
- Pitt, Michael D.
- Pitt, W. E.
- Pitt, William C.
- Pitt, William D
- Pitt, William, 1749-1823
- Pitta Groz, Maria
- Pitta, Iara Regina Cardoso
- Pitta, Paraskevi
- Pittam, Sherry K.
- Pittao, Elena
- Pittara, Marilena
- Pittarello, Marco
- Pittaway, A R
- Pittaway, Anthony R.
- Pittaway, Lois A
- Pittaway, Ronald Jr.
- Pittella, Alexander
- Pittendrigh, C S
- Pittendrigh, Colin S
- Pittenger, J. W.
- Pittenger, J.W. (Firm : Nampa, Idaho)
- Pittermann, Jarmila
- Pittfield, Taryn
- Pittie, A
- Pittie, Aasheesh
- Pittier, Emilio,
- Pittier, Henri, 1857-1950
- Pittillo, Dan
- Pittino, R
- Pittino, Riccardo
- Pittioni, B
- Pittman & Harrison Co.
- Pittman & Harrison Company.
- Pittman and Harrison Co.
- Pittman, A B
- Pittman, A J
- Pittman, Albert B
- Pittman, Cameron
- Pittman, E F
- Pittman, Edward Fisher 1849-
- Pittman, H A
- Pittman, H. H.
- Pittman, J L
- Pittman, Michael, 1985-
- Pittman, R. N.
- Pittman, Shannon E.
- Pittman, Stuart
- Pittman, Tony
- Pittman-Robertson Project (Mont.)
- Pittock, Glenna.
- Pitts, Brenda
- Pitts, David
- Pitts, James
- Pitts, James P
- Pitts, John P
- Pitts, Marjorie W
- Pitts, R M
- Pitts, R O
- Pitts, Raymond C., 1957-
- Pitts, Robert F
- Pitts, Stephen
- Pitts, T David
- Pittsburgh Nurseries.
- Pitwell, L R
- Pitysmont Nurseries.
- Pitz, Kathleen
- Pitz, Kathleen J.
- Pitz, Kevin M
- Pitzonka's Pansy Farm and Nursery.
- Pitzonka's Pansy Farm.
- Piudo, Luciana
- Piva, Alessandher
- Piva, Erminio
- Piva, Lucas
- Pivar, Robert
- Pivari, Marco Otávio Dias
- Pivello, Vânia
- Pivello, Vânia R.
- Pivello, Vânia Regina
- Pivello, VR.
- Piveta, Graziela
- Piveteau, J
- Pivkin, M V
- Piwnik, Agata
- Piwowarczyk, Renata
- Pix, Frantiek
- Pixell, Helen L M
- Piyatrakulchai, Paveen
- Piza, Isabela Miranda de Toledo
- Pizá, Julia
- Piza, M. A.
- Pizango-Paima Emer Gloria
- Pizani, N V
- Pizarro Araya, Jaime Rodrigo
- Pizarro Domínguez, José María
- Pizarro, Desirree
- Pizarro, Gemita
- Pizarro, H
- Pizarro, H N
- Pizarro, Haydée E.
- Pizarro, J. Cristóbal
- Pizarro, Jaime
- Pizarro, Jessica
- Pizarro, Jose Cristóbal
- Pizarro, Juliana
- Pizarro, Marlene
- Pizarro, Natalia
- Pizarro, O.
- Pizarro, Oscar
- Pizarro, R
- Pizarro, Roberto
- Pizarro, Rodrigo
- Pizarro, Valeria
- Pizarro, Vanessa
- Pizarro, Yemmy Paredes
- Pizarro-Mora, Felipe
- Pizcueta y Donday, José
- Pizey, R M
- Pizinger, Donald D.
- Pizo, Héctor
- Pizo, Marco Aurélio
- Pizon, A
- Pizon, Antoine
- Pizzaia, Daniel
- Pizzarello, María Gimena
- Pizzetta, Jules, 1820-1900
- Pizzetti, Daniela
- Pizzigalli, Cristian
- Pizzini, M
- Pizzini, Mauro
- Pizzo, Giuseppina Musarra
- Pizzolato, Thompson Demetrio.
- Pizzoloto, Roberto
- Pizzolotto, Roberto
- Pizzorno, José L.
- Pizzul, Elisabetta
- Pkhakadze, Vera
- Plá Puchulu, Natalia
- Plá y Rave, Eugenio
- Pla, Laura
- Plaat, C.
- Place, A E
- Place, Francis, 1647-1728
- Place, Frank
- Place, J A
- Placer Nurseries.