- T & T Seeds,
- T****.
- T, Harriss Thomas
- T, Miguel A Landestoy
- T, S Talou Breheret
- T, Sivaruban
- T. & J. Egerton
- T. & J. Swords (Firm),
- T. A. Hightower Seed Company.
- T. A. Mitchell (Firm)
- T. and A. Constable,
- T. B. West & Son.
- T. C. Kevitt (Firm)
- T. C. Watanabe, Maurício
- T. D. Hatfield (Firm)
- T. E. Barber and Sons.
- T. E. Griesa (Firm)
- T. E. Steele & Son.
- T. G. Yeomans & Sons (Firm)
- T. H. Hurst (Firm)
- T. H. Spaulding (Firm)
- T. H. Trimmer & Son.
- T. Halliday & Son.
- T. J. Shamburger (Firm)
- T. Jay Lacy & Co.
- T. Kiyono (Firm)
- T. L. Magagnos & Company.
- T. Lee Adams (Firm)
- T. Lee Adams Seed Company.
- T. Moore's Lithography,
- T. Osborne and J. Shipton (Firm)
- T. R. Norman & Sons.
- T. R. Peyton & Sons.
- T. R. Schroeder (Firm)
- T. R. Watson (Firm)
- T. Richards (Firm),
- T. Sakata & Co.
- T. Sakata & Company.
- T. Sinclair & Son,
- T. Sinclair's Lith.,
- T. Sprauge & Co.
- T. W. Daly (Firm)
- T., N
- T., Review By: N
- T.A. Hightower Seed Company.
- T.B. West & Sons.
- T.B. West (Firm)
- T.C. Furnas & Co.
- T.C. Kevitt (Firm)
- T.C. Maxwell & Brothers'.
- T.C. Thurlow & Co.
- T.C. Thurlow's Sons, Inc.
- T.E. Barber & Sons.
- T.E. Botts (Firm)
- T.E. Griesa (Firm)
- T.E. Popp (Firm)
- T.E. Steele & Son.
- T.E. Steele (Firm)
- T.G. Banning (Firm)
- T.G. Owen & Son.
- T.H. Dipnall (Firm)
- T.H. Parker (Firm)
- T.H. Spaulding (Firm)
- T.J. Dwyer & Company.
- T.J. Dwyer & Son.
- T.J. Dwyer (Firm)
- T.J. King Company.
- T.J. Lamontagne & Fils
- T.J. True (Firm)
- T.J. Walker Nurseries.
- T.K. Godbey (Firm)
- T.M. Wannamaker Seed Farms.
- T.N. Foulis (Firm)
- T.O. Weigel (Firm)
- T.R. Ferris (Firm)
- T.R. Pender (Firm)
- T.R. Peyton & Sons.
- T.R. Watson (Firm)
- T.S. Hubbard (Firm)
- T.T. Southwick & Co.
- T.V. Munson & Son Nurseries.
- T.W. & J.P. Rice.
- T.W. Carlton (Firm)
- T.W. Rice (Firm)
- T.W. Schock Nurseries.
- T.W. Styer Nurseries.
- T.W. Wood & Sons,
- T.W. Wood & Sons.
- Ta, Kieu Anh
- Taake, Karl-Hans
- Tabacaru, Crisia A.
- Tabacaru, Ionel Grigore
- Tabachnick, Konstantin R
- Tabak, Michael
- Tabaka, Chris
- Tabaldi, Luciane Almeri
- Taban, C. H. (Charles H.), 1925-
- Tabanelli, Cesare, 1948-
- Tabaranza, Blas R.
- Tabarelli, Marcelo
- Tabarrani, Pietro, 1702-1779
- Tabata, Mitsuo
- Tabata, Shoji
- Tabata, Yara Aiko
- Tabatabai, Rebecca N.
- Tabatinga, George Machado
- Tabb, Durbin C. (Durbin Creighton), 1923-1998
- Tabbert, Helga
- Tabellario, Stacey
- Tabeni, María Solana
- Taber, Andrew
- Taber, Brian
- Taber, Geo. L.
- Taber, Robert W., 1921-
- Taber, Stephen Welton, 1956-
- Taber, Walter Cox
- Taber, William Brewster
- Taberer, W. M.
- Tabernaemontanus, Jacobus Theodorus, 1520-1590
- Taberner, Roberto
- Tablado, Alejandro
- Tableman, Fred
- Tablin, Fern
- Taboada Palomares, Angela
- Taboada, María de los Ángeles
- Taboada, Sergi
- Taboada-González, Paul
- Taboada-Salgado, Alejandro
- Taboga, Sebastião R.
- Tabor, Alice B.,
- Tabor, Christopher A.
- Tabor, Grace, 1873?-
- Tabor, R. J
- Tabor, Stephen P.
- Taborsky, Michael
- Tabraue, Ricardo J Haroun
- Tabrum, Alan R.
- Tabuchi, Masahiro
- Tacaliti, María S.
- Tachard, Guy, 1651-1712
- Taché, Alexandre A. (Alexandre Antonin), 1823-1894
- Taché, J. C. (Joseph-Charles), 1820-1894
- Tachet, Henri
- Tachi, Chikashi
- Tachi, Sumie
- Tachibana, Kazuo
- Tachibana, Leonardo
- Tachibana, Morikuni, 1679-1748
- Tachibana, Yasukuni, 1715-1792
- Tachikawa, Hiroyuki, 1930-
- Tachikawa, Tetsusaburo
- Tack, Elisa
- Tack, Wesley
- Tackett, J. W.
- Tackett, Lydia,
- Täckholm, Gunnar, 1891-1933
- Täckholm, Vivi, 1898-1978
- Tackle, David, 1921-
- Tacoma Seed Co.
- Tacon, Albert G.J
- Taczanowski, Władysław, 1819-1890
- Tada, Keigo
- Tadauchi, Osamu
- Taddei, Fabiano Gazzi
- Taddei, Ruggiero Emma
- Taddei, Valdir Antonio, 1960-2004
- Tadei, W. J.
- Tadei, Wanderli Pedro
- Tadesse, Mesfin
- Tadey, Mariana
- Tadgell, A. J.
- Tadic, Luis Franco
- Tadiosa, Edwin
- Tadiosa, Edwin R
- Tadkowski, T. M.
- Tadler, Andreas
- Tadlock, C. Craig
- Tadulinga Mudaliyar, C.
- Tae, Kyoung Hwan
- Taedoumg, Hermann
- Taeger, Andreas
- Taegio, Bartolomeo, fl 1550-
- Taekul, Charuwat
- Taerum, Stephen
- Taerwe, Laurent
- Taeschler, Andreas
- Taeuber, Hans Werner, 1887-1970
- Tafalla Navascués, Juan José
- Tafe, Dennis J.
- Tafel, Rudolf Leonhard, 1831-1893
- Taff, Joseph A. (Joseph Alexander), 1862-1944
- Taffarel, Alberto
- Taffarel, Marisol
- Taffarel, Tais R.
- Tafforeau, Paul
- Tafoya, Felipe
- Taft, C. P.
- Taft, Harrie M., 1922-
- Taft, John B.
- Taft, L. R. (Levi Rawson), 1859-
- Taft, S. H.
- Taft, Stephen J.
- Taft, William H.
- Taft, William H. (William Howard), 1857-1930
- Tafur, César Medina
- Tafuri, John F
- Tag, Hui
- Tagami, Erika
- Tagane, Shuichiro
- Tagatz, Marlin E.
- Tagawa, Masamoto
- Tagawa, Shin-Ichi
- Tagawa, Takasuke
- Tagestad, A. D.
- Taggart, David
- Taggart, John, (Of Bellevue Poultry Farm)
- Taggart, M. A.
- Taggart, Ralph E
- Taggart, Robert.
- Taggart, Travis William.
- Taghert, H. Paul
- Tagle, Leonardo
- Tagliaferri, Fererico
- Tagliafico, Alejandro
- Taglianti, Augusto Vigna
- Tagliaro, Claudia Helena
- Tagliati, Marcela Cezar
- Tagliolato Acquaviva d'Aragona, Paolo
- Tagnon, Juan José.
- Tago-Nakazawa, Miyuki
- Tagore, Johny Kumar
- Taguchi, Fumio
- Taguchi, Shigetoshi
- Taguchi, Takahiro
- Tague, Robert G
- Taguti, Tátia Leika
- Taha, Marwa
- Taha, Rosna Mat
- Taha, Siti Hasmah
- Tahami, Mohadeseh Sadat
- Tahbaz, Fosiée
- Taher, Humayun
- Taher, Siraj
- Taheri, Ahmed
- Taheri, Shabnam
- Tahir, H. Muhammad (Hafiz Muhammad), 1980-
- Tahir, Syeda Saleha
- Tahnaw, Muammad Alá Ibn Al, fl 1745-
- Tai, F.L.
- Tai, Jingzhe