350 Recent Progress and present State of Systematic Botany. 
now been generally given up, so, for post-Linnzean synonyms, 
e use i i 
‘Prodromus’ and of our ‘Genera Plantarum,’ with such slight 
modifications only as the progress of science has rendered 
necessary, without attempting hypothetical improvements. To 
each order and to each genus should be given short diagnostic 
characters, abridged from the last ‘Genera Plantarum’ or other 
best sources, selecting chiefly those which are most essential 
and contrasted, but including also the most striking or the 
most yeti: amongst the adaptive ones, and a general indica- 
geographical range, with careful reference to the works 
where more details are to be found. Where the orders or 
ra are large, a synopsis or conspectus of the principal 
ivisions and subdivisions would be useful. 
‘To each species should be given :— 
(1) The name. : 
(2) The diagnosis, specific character, or abridged descrip- 
