List of botanists by author abbreviation (Q–R) explained

A–P

To find entries for A–P, use the table of contents above.

Q

Q.D.Clarkson – Quentin Deane Clarkson (born 1925)
Q.E.Yang – Qin Er Yang (born 1964)
Q.F.Wang – Guang Wan Hu (fl. 2007)
Quehl – Leopold Quehl (1849–1922)
Quél. – Lucien Quélet (1832–1899)
Quézel – Pierre Ambrunaz Quézel (1926–2015)
Quinn – Christopher John Quinn (born 1936)
Quiñones – Luz Mila Quiñones (fl. 1995)
Quinq. – Charles-Eugène Quinquaud (1841-1894)
Quisumb. – Eduardo Quisumbíng y Argüelles (1895–1986)
Quoy – Jean René Constant Quoy (1790–1869)
Q.Wang – Qi Wang (fl. 1989)
Q.W.Meng – Qian Wan Meng (fl. 2008)
Q.W.Zeng – Qing Wen Zeng (1963–2012)
Q.X.Guan – Qiu Xiang Guan (fl. 2014)
Q.Xu – Qing Xu (botanist) (fl. 2014)

R

Raab-Straube – Eckhard von Raab-Straube (fl. 2003)
Rabeh. – David Rabehevitra (fl. 2006)
R.A.Black – Raleigh Adelbert Black (1880–1963)
Rach – Louis Theodor Rach (1821–1859)
R.A.Clement – Rose A. Clement (c. 1953–1996)^[1]
Radcl.-Sm. – Alan Radcliffe-Smith (1938–2007)
Raddi – Giuseppe Raddi (1770–1829)
Raderm. – Jacob Cornelis Matthieu Radermacher (1741–1783)
Radford – Albert Ernest Radford (1918–2006)
Radius – Justus Wilhelm Martin Radius (1797–1884)
Radlk. – Ludwig Adolph Timotheus Radlkofer (1829–1927)
R.A.Dyer – Robert Allen Dyer (1900–1987)
Raeusch. – Ernst Adolf Raeuschel (fl. 1772–1797)
Raf. – Constantine Samuel Rafinesque (1783–1840)
Raffles – Thomas Stamford Bingley Raffles (1781–1826)
Rafn – Carl Gottlob Rafn (1769–1808)
R.A.Foster – Robert A. Foster (1938–2002)
R.A.Harper – Robert Almer Harper (1862–1946)
Rahn – Knud Rahn (1928–2013)
R.A.Howard – Richard Alden Howard (1917–2003)
Rajakumar – T.J.S. Rajakumar (fl. 2009)
Raim. – Rudolph Raimann (1863–1896)
R.A.Kerrigan – Raelee A. Kerrigan (fl. 2012)
Raleigh – Ruth E. Raleigh (fl. 1994)
Ralfs – John Ralfs (1807–1890)
Ralph Hoffm. – Ralph Hoffmann (1870–1932)
Ramamoorthy – Thennilapuram Parasuraman Ramamoorthy (born 1945)
R.A.Meissn. – Rachel A. Meissner (fl. 2007)
Ram.Goyena – (1857–1927)
Ramond – Louis Ramond de Carbonnières (1755–1827)
Rand – Isaac Rand (1674–1743)
Randall – Roderick Peter Randall (born 1960)
Randell – Barbara Rae Randell (born 1942)
Randle – Christopher P. Randle (fl. 2006)
Randolph – Lowell Fitz Randolph (1894–1980)
Randrian. – Armand Randrianasolo (fl. 1994)
Rands – Robert Delafield Rands (1890–1970)
Raoul – Etienne Fiacre Louis Raoul (1815–1852)
Rapaics – Raymund Rapaics von Rumwerth (or Ruhmwerth) (1885–1953) (forename also as Rajmond, Rajmund, or Raumund)
Rapin – Daniel Rapin (1799–1882)
Rasm. – Rasmus Rasmussen (1871–1962)
Raspail – François Vincent Raspail (1794–1878)
Rassulova – Mukharram Rassulovna Rassulova (1926–2006)
Rataj – Karel Rataj (1925–2014)^[2]
Rathbone – Damien A. Rathbone (born 1980)
Rathvon – Simon Snyder Rathvon (1812–1891)
Rattan – Volney Rattan (1840–1915)
Ratzeb. – Julius Theodor Christian Ratzeburg (1801–1871)
Rau – Ananda R. Rao (born 1924)
Rauh – Werner Rauh (1913–2000)
Raunk. – Christen C. Raunkiær (1860–1938)
Raup – Hugh Miller Raup (1901–1995)
Rausch – (1928–2022)
Rauschert – Stephan Rauschert (1931–1986)
Rauwolff – Leonhard (Leonhart) Rauwolf(f) (1535–1596)
Raven – John Earle Raven (1914–1980)
Ravenna – Pierfelice Ravenna (1938–2022)
Rawé – Rolf Rawé (born 1938)
R.A.W.Herrm. – Rudolf Albert Wolfgang Herrmann (born 1885)
R.A.White – Richard Alan White (born 1935)
Rawitscher – (1890–1957)
Rawson – Rawson W. Rawson (1812–1899)
Ray – John Ray (1627–1705)
Raym.-Hamet – Raymond-Hamet, also Raymond Hamet (1890–1972)
Raymond – Louis-Florent-Marcel Raymond (1915–1972)
Raynaud – Christian Raynaud (1939–1993)
Rayner – John Frederick Rayner (1854–1947)
Rayss – Tscharna Rayss (1890–1965)
Razaf. – Alfred Razafindratsira (fl. 1987)
Razafim. – Sylvain G. Razafimandimbison (fl. 1999)
Razi – Basheer Ahmed Razi (1916–1999)
R.Baron – Richard Baron (1847–1907)
R.B.Clark – Robert Brown Clark (1914–2005)
R.Bernal – Rodrigo Bernal (born 1959)
R.Bustam. – Rene Alfred Anton Bustamante (born 1979)
R.B.Pike – Radcliffe Barnes Pike (1903–1979)^[3]
R.Br. – Robert Brown (1773–1858)
R.Braga – Ruby Braga (fl. 1964)
R.Br.bis – Robert Brown (1820–1906)
R.Br.ter – Robert Brown (1842–1895)
R.B.Singer – Rodrigo Bustos Singer (born 1970)
R.Butcher – Ryonen Butcher (born 1972)
R.B.Wallis – Robert B. Wallis (fl. 2002)
R.Carbajal – Rodrigo Carbajal (fl. 2017)
R.C.Clark – Ross C. Clark (born 1940)
R.C.Foster – Robert Crichton Foster (1904–1986)
R.C.Gaur – R.C. Gaur (born 1933)
R.Chan – Raymund Chan (born 1965)
Rchb. – Heinrich Gottlieb Ludwig Reichenbach (1793–1879)
Rchb.f. – Heinrich Gustav Reichenbach (1824–1889)
R.C.Jacks. – Raymond Carl Jackson (1928–2008)^[4]
R.C.K.Chung – Richard Cheng Kong Chung (fl. 1996)
R.Clark – Ruth Clark (born 1975)
R.C.Moran – Robbin C. Moran (born 1956)
R.C.Nash – R.C.Nash (fl. 1976)
R.C.Palmer – Richard Charles Palmer (1935–2005)
R.C.Schneid. – Richard Conrad Schneider (born 1890)
R.C.Sinclair – Robert C. Sinclair (fl. 1979)
R.Cunn. – Richard Cunningham (1793–1835)
R.Dahlgren – Rolf Martin Theodor Dahlgren (1932–1987)
R.D.Edwards – Robert David Edwards (born 1981)
R.D.Good – Ronald D'Oyley Good (1896–1992)
R.Doll – Reinhard Doll (born 1941)
R.D.Spencer – Roger David Spencer (born 1945)
R.D.Thomas – Roy Dale Thomas (1936–2022)
Reader – Felix Reader (1850–1911)
Reboul – Eugène de Reboul (1781–1851)
R.E.Brooks – Ralph Edward Brooks (born 1950)
R.E.Buchanan — Robert Earle Buchanan (1883–1973)
Rebut – Pierre Rebut (1827–1902)
Rech. – Karl Rechinger (1867–1952)
Rech.f. – Karl Heinz Rechinger (1906–1998)
R.E.Clausen – Roy Elwood Clausen (1891–1956)
R.E.Cleland – Ralph Erskine Cleland (1892–1971)
R.E.Cook – Rachel E. Cook (fl. 2004)
Record – Samuel James Record (1881–1945)
R.E.Daniels – Roger Edward Daniels (born 1943)
R.E.D.Baker – Richard Eric Defoe Baker (1908–1954)
Redf. – Paul Leslie Redfearn (1926–2018)
Redfield – John Howard Redfield (1815–1895)
Redouté – Pierre-Joseph Redouté (1759–1840)
Reeder – John Raymond Reeder (1914–2009)
Rees – Abraham Rees (1743–1825)
R.E.Fr. – Robert Elias Fries (1876–1966)
Regel – Eduard August von Regel (1815–1892)
Rehder – Alfred Rehder (1863–1949)
Rehmann – Anton Rehmann (1840–1917)
Reichard – Johann Jacob Reichard (1743–1782)
Reichardt – (1835–1885)
Reiche – Karl Friedrich Reiche (1860–1929)
Reichert – Israel G. Reichert (1889–1975)
Reichst. – Tadeus Reichstein (1897–1996)
Reider – Jakob Ernst von Reider (1784-1853)
Reimers – Hermann Johann O. Reimers (1893-1961)
Reinh. – Otto Wilhelm Hermann Reinhardt (1838–1924)
Reinke – Johannes Reinke (1849–1931)
Reinsch – Paul Friedrich Reinsch (1836–1914)
Reinw. – Caspar Georg Carl Reinwardt (1773–1854)
Reiss – Frederick Reiss (fl. 1968)
Reissek – Siegfried Reisseck (1819–1871)
Reitter – Johann Daniel von Reitter (1759–1811)
R.E.Kunze – Richard Ernest Kunze (1838–1919)
R.E.Lee – Robert Edwin Lee (born 1911)
R.Emers. – Ralph Emerson (1912–1979)
Renault – Bernard Renault (1836–1904)
Rendle – Alfred Barton Rendle (1865–1938)
Renvoize – Stephen Andrew Renvoize (born 1944)
Renz – Jany Renz (1907–1999)
Req. – Esprit Requien (1788–1851)
R.E.Schult. – Richard Evans Schultes (1915–2001)
R.Escobar – Rodrigo Escobar (1935–2009)
Resv.-Holms. – Hanna Resvoll-Holmsen (1873–1943)
Resvoll – Thekla Resvoll (1871–1948)
Retz. – Anders Johan Retzius (1742–1821)
Reut. – George François Reuter (1805–1872)
R.E.Vaughan – Reginald Edward Vaughan (1875–1987)
Reveal – James Lauritz Reveal (1941–2015)
Reyneke – (born 1945)
Reynel – Carlos Reynel (fl. 1995)
Reynolds – Gilbert Reynolds (1895–1967)
Reznicek – Anton Albert Reznicek (born 1950)
R.Fern. – Rosette Batarda Fernandes (1916–2005)
R.F.Martin – Robert Franklin Martin (born 1910)
R.G.Garcia – Ricardo G. García (fl. 1992)
R.H.Anderson – Robert Henry Anderson (1899–1969)
R.H.Archer – Robert H. Archer (born 1965)
R.Harkn. – Robert Harkness (1816–1878)
R.Hartig – Heinrich Julius Adolph Robert Hartig (1839–1901)
R.Hedw. – Romanus Adolf Hedwig (1772–1806)
Rheede – Hendrik Adriaan van Rheede tot Drakenstein (1636–1691)
R.H.Miao – Ru Huai Miao (born 1943)
Rhode – Johann Gottlieb Rhode (1762–1827)
R.Hoffm. – Reinhold Hoffmann (born 1885)
R.Hogg – Robert Hogg (1818–1897)
R.H.Petersen – Ronald H. Petersen (born 1934)
R.H.Roberts – Richard Henry Roberts (1910–2003)
R.H.Schomb. – Robert Hermann Schomburgk (1804–1865)
R.H.Wallace – R. H. Wallace (fl. 1955)
Riccob. – Vincenzo Riccobono (1861–1943)
Rich. – Louis Claude Marie Richard (1754–1821)
Richardson – John Richardson (1787–1865)
Richens – Richard Hook Richens (1919–1984)
Richerson – Peter James Richerson (born 1943)
Ricken – Adalbert Ricken (1851–1921)
Ricker – Percy Leroy Ricker (1878–1973)
Ricketson – Jon M. Ricketson (fl. 1997)
Riddell – John Leonard Riddell (1807–1865)
Riddle – Lincoln Ware Riddle (1880–1921)
Ridl. – Henry Nicholas Ridley (1855–1956)
Ridsdale – Colin Ernest Ridsdale (1944–2017)
Riedel – Ludwig Riedel (1790–1861)
Rieder – Conly Leroy Rieder (born 1950)
Riedl – Harald Udo von Riedl (born 1936)
Rigg – George Burton Rigg (1872–1961)
Rigoni – Victor A. Rigoni (fl. 1958)
Říha – Jan Říha (1947–2022)
Rink – Hinrich (Henrik) Johannes Rink (1819–1893)
Riocreux – Alfred Riocreux (1820–1912)
Ripková – Soňa Ripková (fl. 2004)
Risso – Antoine Risso (1777–1845)
Ritgen – Ferdinand August Maria Franz von Ritgen (1787–1867)
Ritter – Karl Ritter (1800–)
Riv. – Augustus Quirinus Rivinus (also as August Bachmann) (1652–1723)
Rivadavia – Fernando Rivadavia (fl. 2003)
Rivière – Marie Auguste Rivière (1821–1877)
Rix – Edward Martyn Rix (born 1943)
Rizzini – Carlos Toledo Rizzini (born 1921)
R.J.Bates – Robert John Bates (born 1946)
R.J.Bayer – Randall James Bayer (born 1955)
R.J.Carp. – Raymond J. Carpenter (fl. 2008)
R.J.D.Graham – Robert James Douglas Graham (1884–1950)
R.J.Eaton – Richard Jefferson Eaton (1890–1976)
R.J.F.Hend. – Rodney John Francis Henderson (born 1938)
R.J.McKenzie – Robert J. McKenzie (fl. 2006)
R.J.Moore – Raymond John Moore (1918–1988)
R.J.Roberts – Ronald John Roberts (born 1941)
R.J.Scheff. – R. J. Scheffer (fl. 1984)
R.Keller – Robert Keller (1854–1939)
R.K.Godfrey – (1911–2000)
R.Kiesling – Roberto Kiesling (born 1941)
R.King – Robert King (fl. 1879)
R.K.Jansen – Robert K. Jansen (born 1954)
R.Klebs – (1850–1911)
R.Knuth – Reinhard Gustav Paul Knuth (1874–1957)
R.K.S.Lee – Robert Kui Sung Lee (born 1931)
R.L.Barrett – Russell Lindsay Barrett (born 1977)
R.Lesson – René Primevère Lesson (1794–1849)
R.L.Giles – Robyn L. Giles (fl. 2008)
R.Mason – Ruth Mason (1913–1990)
R.M.Barker – Robyn Mary Barker (born 1948)
R.M.Beauch. – Ruble Mitchel Beauchamp (born 1946)
R.M.Fonseca – Rosa María Fonseca (fl. 2005)
R.M.Fritsch – Reinhard Michael Fritsch (born 1944)
R.M.Harper – Roland McMillan Harper (1878–1966)
R.Millar – Richard Millar (died 1833)
R.M.Johnst. – Robert Mackenzie Johnston (1844–1918)
R.M.King – Robert Merrill King (1930–2007)
R.M.K.Saunders – Richard M.K. Saunders (born 1964)
R.Morales – Ramón Morales Valverde (born 1950)
R.Morgan – Robert Morgan (1863–1900)
R.Morris – Richard Morris (fl. 1820-1830)
R.M.Patrick – Ruth Patrick (1907–2013)
R.M.Schust. – (1921–2012)
R.M.Sm. – Rosemary Margaret Smith (1933–2004)
R.M.Tryon – Rolla Milton Tryon, Jr. (1916–2001)
R.N.R.Br. – Robert Neal Rudmose-Brown (1879–1957)
Rob. – William Robinson (1838–1935)
Robatsch – Karl Robatsch (1929–2001)
Robbertse – (born 1932)
Robbr. – Elmar Robbrecht (born 1946)
Roberg – Lars Roberg (1664–1742)
Robert – Gaspard Nicolas Robert (1776–1857)
Robertson – David Robertson (1806–1896)
Roberty – (1907–1971)
Robyns – Frans Hubert Edouard Arthur Walter Robyns (1901–1986)
Rochebr. – Alphonse Trémeau de Rochebrune (1834–1912)
Rochel – Anton Rochel (1770–1847)
Rock – Joseph Rock (1884–1962)
Rockley – Alicia Margaret Amherst Cecil Rockley (1865–1941)
R.O.Cunn. – Robert Oliver Cunningham (1841–1918)
Rodd – Anthony N. Rodd (born 1940)
Rodin – Hippolyte Rodin (1829–1886)
Rodion. – (1913–2014)
Rodr. – José Demetrio Rodríguez (1780–1846)
Rodrigo – América del Pilar Rodrigo (fl. 1938–1941)
Rodway – Leonard Rodway (1853–1936)
Roem. – Johann Jacob Roemer (1763–1819)
Roezl – Benedikt Roezl (1824–1885)
Roffavier – Georges Roffavier (1775–1866)
Rogerson – Clark Thomas Rogerson (1918–2001)
Rogow. – Athanasi Semenovich Rogowicz (1812–1878)
Rohde – Michael Rohde (1782–1812)
Röhl. – Johann Christoph Röhling (1757–1813)
Rohr – Julius Philip Benjamin von Rohr (1737–1793)
Rohrb. – Paul Rohrbach (1846–1871)
Rohwer – Jens Gunter Rohwer (born 1958)
Roiv. – (1900–1983)
Rojas – Teodoro Rojas (1877–1954)
Rojas Acosta – Nicolás Rojas Acosta (1873–1946)
Rolfe – Robert Allen Rolfe (1855–1921)
Rolland – Léon Louis Rolland (1841–1912)
Rollins – Reed Clark Rollins (1911–1998)
Romagn. – Henri Romagnesi (1912–1999)
Romans – Bernard Romans (c. 1720–1784)
Rondelet – Guillaume Rondelet (1507–1566)
Ronse Decr. – Louise-Philippe Ronse Decraene (born 1962)
Rooke – Hayman Rooke (1723–1806)
Rönn – Hans Ludwig Karl Rönn (1886–)
Roque – (fl. 1997)
Rosatti – Thomas James Rosatti (born 1951)
Roscoe – William Roscoe (1753–1831)
Rose – Joseph Nelson Rose (1862–1928)
Rosell. – Ferdinando Rosellini (1817–1873)
Rosend. – Carl Otto Rosendahl (1875–1956)
Roseng. – Bernardo Rosengurtt (1916–1985)
Rosenstein (also N.Rosén) – Nils Rosén von Rosenstein (1706–1773)
Rosentr. – Roger Rosentreter (born 1951)
Rosenv. – Janus Lauritz Andreas Kolderup Rosenvinge (1858–1939)
Roshev. – Roman Julievich Roshevitz (1882–1949)
Ross – John Ross (1777–1856)
Rossi – Pietro Rossi (1738–1804)
Rossm. – Emil Adolf (Adolph) Rossmässler (1806–1867)
Rostaf. – Józef Thomasz Rostafiński (1850–1928)
Rostk. – Friedrich Wilhelm Gottlieb Theophil Rostkovius (1770–1848)
Rostr. – Frederik Georg Emil Rostrup (1831–1907)
Rota – (1819–1855)
Roth – Albrecht Wilhelm Roth (1757–1834)
Rothm. – Werner Hugo Paul Rothmaler (1908–1962)
Rothman – Göran Rothman (1739–1778)
Rothr. – Joseph Trimble Rothrock (1839–1922)
Rothsch. – (1838–1900)
Rot Schreck. – Friedrich Rot von Schreckenstein (1753–1808)
Rottb. – Christen Friis Rottbøll (1727–1797)
Rottler – Johan Peter Rottler (1749–1836)
Roubaud – Émile Roubaud (1882–1962)
Roupell – Arabella Elizabeth Roupell (1817–1914)
Rourke – John Patrick Rourke (born 1942)
Roush – Eva Myrtelle Roush (1886–1954)^[5]
Rousseau – Jean-Jacques Rousseau (1712–1778)
Roussel – Henri François Anne de Roussel (1747–1812)
Roux – Jacques Roux (1773–1822)
Rouy – Georges Rouy (1851–1924)
R.O.Williams – Robert Orchard Williams (1891–1967)
Rowland – Verner Hawsbrook Rowland (born 1883)
Rowntree – Lester Gertrude Ellen Rowntree (1879–1979)
Roxb. – William Roxburgh (1751–1815)
Royen – Adriaan van Royen (1704–1779)
Royle – John Forbes Royle (1798–1858)
Roy L.Taylor – Roy Lewis Taylor (1932–2013)
Rozanova – Maria Aleksandrovna Rozanova (Maria Alexandrovna Rozanova) (1885–1957)
Rozefelds – Andrew Carl Frank Rozefelds (born 1960)
Rozier – François Rozier (Jean-François) (1734–1793)
R.Parker – Richard Neville Parker (1884–1958)
R.Patt. – Robert Patterson (born 1947)
R.P.Ellis – Roger Pearson Ellis (born 1944)
R.P.Murray – Richard Paget Murray (1842–1908)
R.Pott – Reino Pott (1869–1965)
R.P.White – Richard Peregrine White (born 1896)
R.Rabev. – (born 1946)
R.R.Bloxam – Richard Rowland Bloxam (1798–1877)
R.R.Haynes – Robert Ralph Haynes (born 1945)
R.Rice – Rod Rice (born 1963)
R.Ross – Robert Ross (1912–2005)
R.R.Rao – R.Raghavendra Rao (born 1945)
R.R.Scott – Robert Robinson Scott (1827–1877)
R.R.Stewart – Ralph Randles Stewart (1890–1993)
R.S.Almeida – Rafael S. Almeida (fl. 1998)
R.Schultz – Richard Schultz (1858–1936)
R.S.Cowan – Richard Sumner Cowan (1921–1997)
R.S.Hill – Robert Southey Hill (born 1954)
R.S.Irving – Robert Stewart Irving (born 1942)
R.S.Rogers – Richard Sanders Rogers (1861–1942)
R.S.Wallace – Robert S. Wallace (fl. 1997)
R.S.Williams – Robert Statham Williams (1859–1945)
R.T.Baker – Richard Thomas Baker (1854–1941)
R.T.Clausen – Robert Theodore Clausen (1911–1981)
R.T.Mill. – R. T. Miller (fl. 2012)
R.T.Veitch – Robert Veitch (1823–1885)
Rudall – Paula J. Rudall (born 1954)
Rudd – Velva Elaine Rudd (1910–1999)
Rudge – Edward Rudge (1763–1846)
Rudolph – Johann Heinrich Rudolph (1744–1809)
Rudolphi – Karl Rudolphi (1771–1832)
R.Uechtr. – Rudolf Friedrich von Uechtritz (1838–1886)
Ruhland – Wilhelm Otto Eugen Ruhland (1878–1960)
Ruiz – Hipólito Ruiz López (1754–1815)
Rule – Kevin James Rule (born 1941)
Rumph. – Georg Eberhard Rumphius (1628–1702)
Rümpler – Karl Theodor Rümpler (1817–1891)
Rundel – Philip Wilson Rundel (born 1943)
Runemark – Hans Runemark (1927–2014)
Rupin – Ernest (Jean Baptiste) Rupin (1845–1909)
Rupp – Herman Rupp (1872–1956)
Ruppius – Heinrich Bernard Ruppius (1688–1719)
Rupr. – Franz Josef Ruprecht (1814–1870)
Rusby – Henry Hurd Rusby (1855–1940)
Russow – Edmund August Friedrich Russow (1841–1897)
Rustan – Øyvind H. Rustan (born 1954)
Rutenb. – Diedrich Christian Rutenberg (1851–1878)
Rutherf. – Daniel Rutherford (1749–1819)
Rutk. – Piotr Rutkowski (born 1969)
Ruysch – Frederik Ruysch (1638–1731)
R.Vásquez – Roberto Vásquez (born 1941)
R.Vig. – René Viguier (1880–1931)
R.V.Sm. – Raymond Vaughan Smith (born 1923)
R.Wagner – Rudolf Wagner (born 1872)
R.Wallis – Rannveig Wallis (fl. 2002)
R.Warner – Robert Warner (c. 1815–1896)
R.W.Br. – Roland Wilbur Brown (1893–1961)
R.W.Darwin – Robert Waring Darwin of Elston (1724–1816)
R.W.Davis – Robert Wayne Davis (born 1959)
R.W.Ham – R.W.J.M.van der Ham (born 1951)
R.W.Jobson – Richard W. Jobson (fl. 2007)
R.W.Long – Robert William Long (1927–1976)
R.W.Pohl – Richard Walter Pohl (1916–1993)
R.W.Wallace – Robert Whistler Wallace (1867–1955)
Rycroft – Hedley Brian Rycroft (1918–1990)
Rydb. – Per Axel Rydberg (1860–1931)
Rye – Barbara Lynette Rye (born 1952)
R.Yonzone – Rajendra Yonzone (fl. 2012)
Ryppowa – Halina w Kowalskich Ryppowa (1899–1927)
Rzed. – Jerzy Rzedowski (1926–2023)^[6]

S–Z

To find entries for S–Z, use the table of contents above.

Notes and References

Web site: Optima Newsletter . 31 . e . News . 1997 . 2014-11-23 . 2016-10-02 . https://web.archive.org/web/20161002083930/http://www.optima-bot.org/publications/Newsletter/31/#nouvelles . dead .
Web site: Rataj, Karel, 1925–2014. Knihovní Katalog.
News: Dr. Radcliffe B. Pike, Botanist, dies. September 14, 1979. Quoddy Tides. Eastport, Maine.
http://www.legacy.com/obituaries/tribtown/obituary.aspx?n=raymond-carl-jackson&pid=107305074 obituary. TribTown.com
Web site: Fling, Eva Myrtelle . . 24 April 2017.
News: Murió Jerzy Rzedowsk, pilar de la botánica en México; comunidad científica lamenta pérdida . 29 March 2023 . Milenio . 28 March 2023.