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Henri. Max. Maximilian, Alexander Philipo, Prince of Wied. Maxim. Maximowicz, Carl Johann. Medic. Medicus, Friedrich Cassimir. Meisn. Meisner, Carl Friedrich. Mer. Merat, Francois Victor. Mert. & Koch., M. & K. Mertens, Franz Karl, and Koch, Wilhelm Daniel Joseph. Mctt. Mettenius, George Heinrich. Mey. Meyer, Ernest Heinrich Friedrich. Michx. Michaux, Andre. Mich*, f. Michaux, Francois Andre. Mill. Miller, Philip. Millsp. Millspaugh, Charles Frederic. Mitch. Mitchell, John. Mont. Montagne, Jean Francois Camille. Moric. Moricand, Moise Etienne. Moq. Moquin-Tandon, Alfred. Muell. Arg. Miiller, Jean, of Aargau. Mucnch. Muenchhausen, Otto von. Muhl. Muhlenberg, Heinrich Ludwig. Murr. Murray, Johann Andreas. Neck. Necker, Noel Joseph de. Newm. Newman, Edward. Nestl. Nestler, Christian Gottfried.

Nutt. Nuttall, Thomas. Ort. Ortega, Casimiro Gomez. Pall. Pallas, Peter Simon. Pari. Parlatore, Filippo. P. Br. Browne, Patrick.

Pers. Persoon. Christian Hendrik.

Planch. Plancnon, Jules Emile.

Plum. Plumier, Charles.

Poir. Poiret, Jean Louis Marie.

Poll. Pollich, Johann Adam.

Pourr. Pourret, Pierre Andre.

R. Br. Brown, Robert.

Raf. Rafinesque-Schmaltz, Constantino Samuel.

Redf. & Rand. Redfield, John H., and Rand, Edward S.

Reichb. Reichenbach, Heinrich Gottlieb Ludwig.

Retz. Retzius. Anders Johan.

Richards. Richardson, John.

Ridd. Riddell, John L.

Rivin. Rivinus, August Quirinus.

Robb. Robbins, J. W.

Roem. Roemer, Johann Jacob.

R. & S. R^oemer, J. J., and Schultes, Joseph August.

Roem. & Ust. Roemer, J. J., and Usteri, Paulus.

Rostk. Rostkovius, Friedrich Wilhelm Gottlieb.

Rottb. Rottboell, Christen Fries.

Roxb. Roxburgh, William.

R.&P. Ruiz, Lopez Hipolito, and Pavon, Josef.

Rupp. Ruppius, Heinrich Bernhard.

Rupr. Ruprecht, Franz J.

Rydb. Rydberg, Per Axel.

St. Hil. St. Hilaire, August de.

Salisb. Salisbury, Richard Anthony.

Sarg. Sargent, Charles Sprague.

Sartw. Sartwell, Henry P.

Sav. Savi, Gaetano.

Schk. Schkuhr, Christian.

Schlecht. Schlechtendal, Diedrich Franz Leon-hard von.

Schleich. Schleicher, J. C.

Schleid. Schleiden, Matthias Jacob.

Schrad. Schrader, Heinrich Adolph.

Schreb. Schreber, Johann Christian Daniel von.

Schult. Schultes, Joseph August.

Sch. Bip. Schultz Bipontinus, Karl Heinrich.

Schum. Schumacher, Christian Friedrich.

Schwein. Schweinitz, Lewis David von.

Scop. Scopoli, Johann Anton.

Scribn. Scribner, Frank Lamson.

Scribn. & Ryd. Scribner, F. L., and Rydberg, P. A.

Ser. Seringe, Nicolas Charles.

Seub. Seubert, Moritz.

Sheld. Sheldon, Edmund P.

Shuttlw. Shuttleworth, Robert.

Sibth. Sibthorp, John.

Sieb. & Zucc. ' Siebold, Philipp Franz von, and Zuccarini, Joseph Gerhard.

Soland. Solander, Daniel.

Spreng. Sprengel, Kurt.

Steud. Steudel, Ernest Gottlieb.

Stev. Steven, Christian.

Sudw. Sudworth George B.

Sw. Swartz, Olof.

5". Wats. Watson, Sereno.

Thuill. Thuillier, Jean Louis.

Thunb. Thunberg, Carl Peter.

Thurb. Thurber, George.

Torr. Torrey, John.

Torr. & Schw. Torrey, J., and Schweinitz, L. D.

Torr. & Hook. Torrey, John, and Hooker, William Jackson.

Tourn. Tournefort, Joseph Pitton de.

Tratt. Trattinnick, Leopold.

Trel. Trelease, William.

Traut. Trautvetter, Ernest Rudolph.

Trin. Trinius, Karl Bernhard.

Trin. & Rupr. Trinius, Karl B., and Ruprecht. F.J.

Tuckerm. Tuckerman, Edward.

Turcz. Turczaninow, Nicolaus.

Underw. Underwood, Lucien Marcus.

Vaill. Vaillant, Sebastien.

Veil. Velloso, Jose Marianno de Conceigao.

Vent. Ventenat, fitienne Pierre.

Vill. Villars, Dominique.

Wahl. Wahlenberg, Georg.

Wahlb. Wahlenberg, Pehr Friedrich.

W. & K. Waldstein, Franz Adam von, and

Kitalbal, Paul. Wallr. Wallroth, Karl Friedrich Wilhelm. Walp. Walpers, Wilhelm Gerhard. Walt. Walter, Thomas. Wang. Wangenheim, Friedrich Adam Julius von. Wats. & Coult. Watson, Sereno, and Coulter,

John Merle.

Web. Weber, Friedrich.

Wedd. Weddell, H. A.

Weinm. Weinmann, J. A.

Wender. Wenderoth, George Wilhelm Franz.

Wendl. Wendland, Johann Christoph.

Wettst. Wettstein, R. von.

Wigg. Wiggers, Friedrich Heinrich.

Willd. Willdenow, Carl Ludwig.

Wimm. Wimmer, Friedrich.

Wxsliz. Wislizenus, A.

With. Withering, William.

Wolfg. Wolfgang, Jan.

Woodv. Woodville, William.

Wormsk. Wormskiold, M. von.

Wr. Wright, John.

Wulf. Wulfen, Franz Xavi'er.