ERRATA 
page 7, line 7 
delete the parenthesis before 203 
page 9, line 1 
for ed read de 
page 50, line 35 
for (1864) read (1904) 
page 67, line 26 
for Curcurbita read Cucurbita 
page 72, line 5 
for 1 read 3 
page 72, line 6 
for 3 read 1 
page 77, line 18 
for is read are 
page 117, line 23 
for showed read shows 
page 125, line 15 
for Lyons read Lyon 
page 165, line 19 
for Baskervillea read Baskervilla 
page 171, line 4 
after satisfied insert in 1933 
page 196, line 5 
for orchidaceae read Orchidaceae 
[ xvii ] 
