- Philpot, Charles Walter, 1939-
- Philpot, J. H., Mrs.
- Philpots, John Richards.
- Philpott & Collins,
- Philpott, Alfred, 1870-1930
- Philpott, C M
- Philpott, Loralee
- Philpott, Loralee L
- Philpott, Stacy M
- Philpott, V W
- Philpott, Wendy.
- Phimister, Euan
- Phimmachak, Somphouthone
- Phimpasone, Vilay
- Phimphan, Sumalee
- Phin, John, 1830-1913
- Phinney, Harry K
- Phinney, Mark
- Phipps Tapirapecó Expedition 1989-
- Phipps, Constantine John, 1744-1792
- Phipps, Anthone, 1898-
- Phipps, Charles Alexander 1858-
- Phipps, D W
- Phipps, Francis
- Phipps, Howard, 1927-
- Phipps, J B
- Phipps, Ramsay Weston, 1838-1923
- Phipps, W. H.
- Phipps-Bradley Expedition 1932-1933
- Phipps-Bradley Expedition (1932-1933)
- Phipson, Emma, active 19th century-
- Phipson, H M
- Phipson, T. L. (Thomas Lamb), 1833-1908
- Phiri, Noah Anthony
- Phiri, Sydney
- Phisalix
- Phisalix, C
- Phisalix, Césaire 1852-1906
- Phisalix, Marie, 1861-
- Phisalix, Marie, 1861-1946
- Phitos, D. (Dimitrios)
- Phiwsaiya, Kornsunee
- Phlaingam, Sirikamon
- Phlippi, R A
- Phlips, Edward J
- Phoebe, Trevor
- Phoebus, Philipp, 1804-1880
- Phoebus, Ronald Wayne.
- Phoebus, V. C.
- Phoenix Nurseries.
- Phoenix Nursery Co.
- Phoenix Nursery Company.
- Phoenix, F. K.
- Phoenix, F. S.
- Phoenix, Franklin Kelsey, 1825-1911
- Phoenix, R. Dean
- Phokaeo, Supatra
- Pholpanthin, Pornsilp
- Pholpunthin, Pornsilp
- Pholyotha, Arthit
- Phon, Chooi-Khim
- Phone, H
- Phonemany, Monthien
- Phongpaichit, S
- Phongsuwan, Niphon
- Phoofolo, Mpho
- Phookamsak, Rungtiwa
- Phoon, S N
- Phorson, J. E.
- Phosri, C
- Phosri, Cherdchai
- Phothieng, Duangrat
- Phothisath, Phouthong
- Photita, W
- Phoulivong, Sittisack
- Phraphuchamnong, Phimpisa
- Phu, Thao T. L.
- Phua, Mui How
- Phukan, Mridu Paban
- Phukhamsakda, Chayanard
- Phumsathan, Sangsan
- Phung, Chee-Chean
- Phung, Hong Luong T.
- Phung, Khanh Chuyen
- Phung, Trung
- Phung, Trung My
- Phuoc, Duang Trung
- Phuoc, Le Duy
- Phuong, Ta Hoa
- Phuong, Ta-Hoa
- Phupanbai, Apichaya
- Phurailatpam, S
- Phurbu, Dorji
- Phutthai, T
- Phutthai, Thamarat
- Phycological Society of America.
- Phyllo Cactus Farm.
- Physical Oceanography Laboratory.
- Physikalisch-Ökonomische Gesellschaft zu Königsberg
- Physikalisch-Ökonomische Gesellschaft zu Königsberg.
- Physiographiska Sallskapet i Lund
- Physiographiska Sallskapet i Lund.
- Physiographiske forening i Christiania
- Physiographiske forening i Christiania.
- Physiologische Gesellschaft zu Berlin.
- Phythian, J. E. (John Ernest), 1858-
- Phythian, John Ernest, 1858-
- Phythian-Adams, E G
- Phytopathologisch Laboratorium "Willie Commelin Scholten".
- Phytopathologisch Laboratorium "Willie Commelin Scholten."
- pi duo qi
- Pi, Jorge Sabater
- Pi, Yinhui
- Pia y Peuela, Ramn.
- Pia, Julius, 1887-1943
- Pia, Mónica V.
- Piacenti, Erio
- Piacentini, Luis
- Piacentini, Luis N.
- Piacentini, Vítor de Queiroz
- Piacentini, Vitor Q.
- Piacentino, Antonina
- Piaget, E
- Piaget, Edouard
- Piaget, J
- Piaget, Nicole
- Piaggio, M J
- Piálek, Lubomír
- Piana, Gian Pietro
- Piana, P. A.
- Piana, Pitágoras Augusto
- Piana, Renzo P.
- Piana, Renzo,
- Pianchiche, Javier
- Pianetti, GA
- Piani, P
- Pianka, Eric R. (Eric Rodger), 1939-
- Pianka, G
- Pianka, G A
- Piano, Elena
- Pianovskaya, I A
- Piantanida, Martha J
- Piao, Chun-Gen
- Piao, Sheo
- Piapukiew, J
- Piapukiew, Jittra
- Piasecka, Marta
- Piasecke, Jessica R.
- Piasevoli, Gvido
- Piaskowski, Victoria D
- Piątek, Krzysztof
- Piatek, M
- Piatek, Marcin
- Piatigorsky, Joram
- Piątkowska, J
- Piatkowski, Uwe
- Piatt, John
- Piatt, John F
- Piattella, E
- Piatti, L.
- Piatti, Liliana
- Piazza, Alessandro
- Piazza, Ligia Debone
- Piazza, Maria
- Piazza, Mariella
- Piazza, Michele
- Piazza, Paola
- Piazza, S. P.
- Piazza, Simone Di
- Piazzi, L
- Piazzini, Sandro
- Pic, Maurice, 1866-1957
- Pic., M
- Pica, Antonio
- Pica, Daniela
- Pica, Feliciana
- Picado Twight, Clodomiro
- Picado, C
- Picado, Simone da Silva
- Picaglia, Luigi
- Picanço, Ana
- Picanco, Juliane Bentes
- Picanço, Marcelo Coutinho
- Picapedra, P. H. S.
- Picapedra, Pablo H. dos Santos
- Picapedra, Pablo Henrique dos Santos
- Picapedra, PHS.
- Picard, Emile, 1856-1941
- Picard, François, 1879-1939
- Picard, Isabelle
- Picard, Jacques, 1828-1905
- Picard, J-J
- Picard, Lionel
- Picardi, Daniela
- Picariello, O
- Picariello, Orfeo
- Picart (Philibert) 1825-1895
- Picatoste y Rodríguez, Felipe, 1834-1892
- Picazo, Esteban D.
- Picazo, Félix
- Picazo-Moz, Antonio
- Picca, A
- Picca, Pablo
- Piccard, Auguste, 1884-1962
- Piccardo, Pino
- Picchi, Douglas G.
- Picchi, Veronica Dougherty
- Picchia, Paulo Celso Dornelles Del
- Picciani, J
- Piccinetti, Corrado
- Piccinin, Jorge Luiz
- Piccinin, Maurizio
- Piccinin, R C
- Piccinini, Alexandre
- Piccione, Giuseppe
- Picciulo, Jonathan Charles.
- Piccoli, Antonio Pizzuti
- Piccoli, Carla F.
- Piccoli, Costanza
- Piccoli, Gustavo Cauê de Oliveira
- Piccolo, María C
- Piccolo, Marisa de Cássia
- Piccolo, Medea Lo
- Piccone, Antonio, 1844-1901
- Piccott, Archibald W., 1869-1926
- Picek, Lukas
- Picella, Gianni
- Picha, David Harry, 1954-
- Pichara, Cristian
- Pichard D, Gastón
- Pichard.
- Pichardo y Tapia, Estéban, 1799-1879
- Pichardo-García, Brayan
- Piché, Céline
- Piché, Edgard W.
- Piché, G.-C. (Gustave-Clodomir), 1880-1956
- Piché, Gustave Clodomir, 1880-
- Picher, C R
- Picheral, B
- Pichet, Pierre
- Pichler, Franz B
- Pichler, Friedrich
- Pichler, HA.
- Pichler, Helen A
- Pichler, Helen Audrey
- Pichlyk, M.
- Pichon, Delphine
- Pichon, M. (Botanist) (Michel)
- Pichon, Magalie
- Pichon, Marcel