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- Author:0degaard, M.
- Author:1The author wishes to acknowledge co-authorship with David M. Spooner† on S. jamesii and S. stoloniferum and with Sandra Knapp and Tiina Särkinen on the black nightshade species.
- Author:308. 1897
- Author:A., Westerbergh
- Author:A. A. Reznicek
- Author:A. C. Dibble
- Author:A. Jonathan Shaw
- Author:A. Joyce Gould
- Author:A. Linn Bogle
- Author:A. Michael Powell
- Author:A. Michele Funston
- Author:A. Murray Evans
- Author:Aagesen, D.
- Author:Aakjar, R.A., Jr.
- Author:Aalders, L.E.
- Author:Aares, E.
- Author:Aaron D. Shaw
- Author:Aaron Floden
- Author:Aaron Goldberg†
- Author:Aase, H.C.
- Author:Abbe, E.C.
- Author:Abbott, R.J.
- Author:Abdallah, M.S.
- Author:Abe, T.
- Author:Abramov, I.I.
- Author:Abramova, A.L.
- Author:Abramova, L.I.
- Author:Abrams, L.
- Author:Acebo, L.
- Author:Acevedo-Rosas, R.
- Author:Achey, D.M.
- Author:Ackerman, J.D.
- Author:Adams, D.C.
- Author:Adams, P.
- Author:Adams, R.M.
- Author:Adams, R.P.
- Author:Adams, W.P.
- Author:Adamson, R.S.
- Author:Adati, S.
- Author:Aderkas, P.
- Author:Adjoa Richardson Ahedor
- Author:Adrouny, G.A.
- Author:Aellen, P.
- Author:Afonso, A.
- Author:Ahedor, A.R.
- Author:Aiken, S.G.
- Author:Ainouche, M.X.
- Author:Airy Shaw, H.K.
- Author:Aker, S.
- Author:Akeroyd, J.R.
- Author:Al-Hemaid, F.M.A.
- Author:Al-Shehbaz, I.A.
- Author:Alain Vanderpoorten
- Author:Alam, M.T.
- Author:Alam, S.F.
- Author:Alan Herndon
- Author:Alan R. Smith
- Author:Alan S. Weakley
- Author:Alan T. Whittemore
- Author:Albach, D.C.
- Author:Albers, F.
- Author:Albert, T.
- Author:Albert, V.A.
- Author:Aldasoro, J.J.
- Author:Alderson, J.
- Author:Alex, J.F.
- Author:Alexander, D.K.
- Author:Alexander, E.J.
- Author:Alexander, J.H.
- Author:Alexander Krings
- Author:Alexandre K. Monro
- Author:Alexeev, E.B.
- Author:Alexey Shipunov
- Author:Alford, J.D.
- Author:Alfred E. Schuyler
- Author:Ali, M.A.
- Author:Ali, S.I.
- Author:Alice, L.A.
- Author:Alice L. Heikens
- Author:Alimohammadian, H.
- Author:Aliscioni, S.A.
- Author:Alison C. Dibble
- Author:Alison E. L. Colwell
- Author:Alison McKenzie Mahoney
- Author:Allan D. Nelson
- Author:Allan D. Zimmerman
- Author:Allan J. Bornstein
- Author:Allard, H.A.
- Author:Allem, A.C.
- Author:Allen, B.
- Author:Allen, B.H.
- Author:Allen, G.A.
- Author:Allen, G.E.
- Author:Allison, J.R.
- Author:Allphin, L.
- Author:Allred, K.W.
- Author:Alston, A.H.G.
- Author:Alt, K.S.
- Author:Alverson, E.R.
- Author:Ambrose, J.D.
- Author:Ames, 0
- Author:Ames, O.
- Author:Ammann, K.H.
- Author:Amy Trauth Nare
- Author:Anamthawat-Jonsson, K.
- Author:Ancibor, E.
- Author:Anderberg, A.A.
- Author:Anders, C.M.
- Author:Andersen, W.R.
- Author:Anderson, C.E.
- Author:Anderson, D.E.
- Author:Anderson, D.G.
- Author:Anderson, E.
- Author:Anderson, E.F.
- Author:Anderson, H.M.
- Author:Anderson, J.E.
- Author:Anderson, J.L.
- Author:Anderson, L.C.
- Author:Anderson, L.E.
- Author:Anderson, M.R.
- Author:Anderson, W.R.
- Author:Andersson, L.
- Author:Andersson, S.
- Author:Anderton, L.K.
- Author:Ando, H.
- Author:Andreasen, K.
- Author:Andreasen, M.L.
- Author:Andres, T.C.
- Author:Andrew Salywon
- Author:Andrews, A.L.
- Author:Andrews, S.
- Author:Angela E. Newton
- Author:Angela McDonnell
- Author:Anita F. Cholewa
- Author:Ann E. Rushing
- Author:Ann Swanson
- Author:Annable, C.R.
- Author:Anne Bruneau
- Author:Anonymous,
- Author:Anton, A.M.
- Author:Antonio, T.M.
- Author:Anway, J.C.
- Author:Appan, S.G.
- Author:Appel, O.
- Author:Applegate, E.I.
- Author:Applequist, W.L.
- Author:Aquino Assis, J.G.de
- Author:Arber, A.
- Author:Arbo, M.M.
- Author:Archambault, A.
- Author:Arditti, J.
- Author:Argue, C.L.
- Author:Argus, G.W.
- Author:Arikawa, T.
- Author:Armbruster, W.S.
- Author:Armesto, J.J.
- Author:Armstrong, B.
- Author:Armstrong, L.
- Author:Arnason, J.T.
- Author:Arno, S.F.
- Author:Arnold, R.M.
- Author:Arnott, H.J.
- Author:Arnow, L.A.
- Author:Aronson, J.K.
- Author:Arriaga, M.O.
- Author:Arriagada, J.E.
- Author:Arrington, J.M.
- Author:Arroyo, M.T.K.
- Author:Arthur, E.D.
- Author:Arthur C. Gibson
- Author:Arthur Haines
- Author:Arts, T.
- Author:Arzeni, C.B.
- Author:Arènes, J.
- Author:Asay, K.H.
- Author:Ashby, W.C.
- Author:Ashri, A.
- Author:Ashworth, V.E.T.M.
- Author:Asms, M.J.
- Author:Assadi, M.
- Author:Assafa, S.
- Author:Assasi, M.
- Author:Atee, W.L.
- Author:Athey, R.
- Author:Atkins, R.J.
- Author:Atkinson, T.A.
- Author:Atwood, J.T.
- Author:Aubréville, A.
- Author:Auquier, P.
- Author:Austin, D.
- Author:Austin, D.F.
- Author:Averyanov, L.V.
- Author:Avetisian, E.M.
- Author:Ayensu, E.S.
- Author:Azuma, T.
- Author:Bö, rner
- Author:B, R.
- Author:B. Eugene Wofford
- Author:Baad, M.F.
- Author:Baagøe, J.
- Author:Baaijens, G.J.
- Author:Babcock, E.B.
- Author:Bachmann, K.
- Author:Bacigalupi, R.
- Author:Backlund, M.
- Author:Backman, T.W.H.
- Author:Bacon, J.D.
- Author:Badawi, A.
- Author:Baden, C.
- Author:Badré, F.
- Author:Baechle, M.D.
- Author:Baehni, C.
- Author:Baeza P., C.M.
- Author:Baggs, J.E.
- Author:Bagnall, N.
- Author:Bagnell, B.A.
- Author:Bailey, C.D.
- Author:Bailey, D.K.
- Author:Bailey, I.W.
- Author:Bailey, J.P.
- Author:Bailey, L.G.
- Author:Bailey, L.H.
- Author:Baillargeon, G.
- Author:Baillon, H.E.
- Author:Bain, J.F.
- Author:Baird, G.I.
- Author:Baird, J.R.
- Author:Baird, V.
- Author:Baird, V.B.
- Author:Baker, C.A.
- Author:Baker, H.G.
- Author:Baker, J.G.
- Author:Baker, M.A.
- Author:Baker, M.M.
- Author:Bakhtiyarova, R.
- Author:Bakker, K.
- Author:Bakowsky, O.A.
- Author:Bakshi, T.S.
- Author:Baldini, R.M.
- Author:Baldwin, B.G.
- Author:Baldwin, J.T.
- Author:Baldwin, W.K.W.
- Author:Balfourier, F.
- Author:Balick, M.J.
- Author:Ball, P.W.
- Author:Ballard, H.E.
- Author:Ballard, R.
- Author:Ballington, J.R.
- Author:Balogh, P.
- Author:Banek, H.M.
- Author:Banerjee, D.K.
- Author:Banerjee, U.C.
- Author:Banks, D.J.
- Author:Barabé, D.
- Author:Baranski, M.J.
- Author:Barbara E. Goodson
- Author:Barbara Ertter
- Author:Barbara Greene Shipes
- Author:Barbara L. Wilson
- Author:Barber, J.C.
- Author:Barbour, M.G.
- Author:Barclay Estrup, P.
- Author:Barford, A.
- Author:Barker, C.M.
- Author:Barker, N.P.
- Author:Barker, N.R.
- Author:Barker, W.R.
- Author:Barker, W.T.
- Author:Barkley, T.M.
- Author:Barkoudah, Y.I.
- Author:Barksdale, L.
- Author:Barkworth, M.E.
- Author:Barlow, B.A.
- Author:Barlow-Irick, P.L.
- Author:Barnabas, A.D.
- Author:Barnard, C.
- Author:Barneby, R.C.
- Author:Barnes, C.
- Author:Barnes, P.G.
- Author:Barnes, P.W.
- Author:Barney L. Lipscomb
- Author:Barney Lipscomb
- Author:Barnhart, J.H.
- Author:Barreca, J.L.
- Author:Barrett, S.C.H.
- Author:Barrier, M.
- Author:Barringer, K.
- Author:Barrow, S.C.
- Author:Barry E. Hammel
- Author:Bartel, J.A.
- Author:Barthlott, W.
- Author:Bartholomew, B.M.
- Author:Bartlett, E.
- Author:Bartlett, H.H.
- Author:Bartlett, J.K.
- Author:Barton, L.V.
- Author:Bartram, E.B.
- Author:Bartram, W.
- Author:Basha, E.C.
- Author:Basilevskaja, N.A.
- Author:Baskin, C.C.
- Author:Baskin, J.M.
- Author:Baskins, C.C.
- Author:Baskins, J.M.
- Author:Bassett, C.W.Crompton
- Author:Bassett, I.J.
- Author:Bate Smith, E.C.
- Author:Bateman, R.M.
- Author:Bates, D.M.
- Author:Bates, V.M.
- Author:Batra, L.R.
- Author:Batra, S.W.T.
- Author:Baum, B.R.
- Author:Baum, D.A.
- Author:Bay, C.
- Author:Baya, T.
- Author:Bayer, C.
- Author:Bayer, E.
- Author:Bayer, R.
- Author:Bayer, R.J.
- Author:Beadle, C.D.
- Author:Beal, E.O.
- Author:Beal, J.M.
- Author:Beal, W.J.
- Author:Beaman, J.H.
- Author:Beardsley, M.R.
- Author:Beardsley, P.M.
- Author:Beatley, J.C.
- Author:Beattie, A.J.
- Author:Beatty, B.L.
- Author:Beaty, H.E.
- Author:Beauchamp, A.C.
- Author:Beaudry, J.R.
- Author:Beauverd, G.
- Author:Beck, C.H.
- Author:Beck, J.B.
- Author:Becker, J.D.T.
- Author:Becker, K.M.
- Author:Becking, R.W.
- Author:Beckner, J.
- Author:Bedigian, D.
- Author:Bednarek-Ochyra, H.
- Author:Beentje, H.
- Author:Beentje, H.J.
- Author:Beerling, D.J.