ERRATA 
P. 43, footnote 2, for KAarsTEN, H., read Karsten, G. 
P. 52, Tradescantia zebrina optimum, for .g90 read .966. 
P. 88, in table under Mean chresard, for 14.7% read 14.1%. 
P. 109, line 2 from top, omit hyphen 
P. 111, line 8 from bottom, for peuicaibictactoun read semiorbicularibus. 
P. 113, line 13 from bottom, for punctulata read punctulato. 
P. 115, line 10 from bottom, before minore insert folio. 
P. 116, line 10 from bottom, for bimellemetrali read bimillemetrali. 
P. 116, line 3 from bottom, for pedunculos implice read pedunculo simplice. 
P. 117, line 13 from top, for longa read longo. é 
P. 124, line 5 below Table III, for o.0048™ read 0.00048". 
P. 131, line 18 from top, for 1883 read 1833. 
P. 147, line 4 from top, for WILLIAM read EDWARD. 
P. 154, line 16 from top and footnote 15, for SARGENT read SARGANT. 
P. 156, line 19 from top, for cell read cells. 
P. 193, under title, for Prerce read PEIRCE, 
Pp. 195, 197, 199, 201, in folio, for PrERCE read PEIRCE. 
P. 206, line 21 from top, for edule read edulis. 
Pp. oeb, line 16 from top, for mere read near 
P. 323, in legend, for ‘‘lucidum” read ‘lucidus, fe 
Pp. 323, 325, in legend, for pseudoboletum read boletus. 
P. 330, line r9 from top, for vértiga read Maio 
P. 334, line 24 from top, for 
P. 335, line 2 from top, for tusgae read nrake 
P. 335, lines 3 and 5 from bottom, for pseudoboletum read pseudoboletus. 
P. 336, line 3 from top, for pseudoboletum read pseudoboletus. 
P. 336, line 5 from top, for 21007 read 21077 
P. 338, lines 1, 7, 22, for pseudoboletum read pseudoboletus. 
