Notice of Dr. Hooker's Flora of New Zealand. 249 
acommon standard to which our empirical determinations of 
? 
ome valuable and timely remarks are to be found in the fol- 
lowing extract : 
“Tt is not surprising that two naturalists, taking opposite views of the 
value of characters, should so treat a variable genus that their cenclu- 
Sons as to the limits of its species should be wholly irreconcilable. 
Some naturalists consider every minute character, if only tolerably con- 
of OWering, ete. Th 
Practically carried out in man 
In such hands the New Zealand genera 
temperate cli- 
'n the herbarium. ‘The It of my observations is, that differen- 
Ces of habit, color, hairiness, and outline of leaves, and minute charac- 
drawn from other rgans than those of reproduction, are generally 
s 
Whose specific characters are evident. In doing so I believe I have 
Seris, Vol. XVII, No. 50.—March, 1854. 32 
