374 



PLANTS OF NEW ZEALAND 



to the earlier form are, however, not necessarily confined to- 

 young plants, but are also sometimes found upon the mature 

 specimen. 



Unfortunately, but little attention has hitherto been given 

 to the leaf-forms of the whip-cord Veronicas. Prof. Goebel, 



Fit,'. 12tt. 1. Helichrysum u"iicro)>l]yllnrn. '2. H. coralloides. 3. H- niicrophyllum (var.) 

 i. Veronica lycopodioides. .5. Libocedrns Bidwillii. 6. V. Tetrasticlia. 



the famous botanist of Munich, was the first to study them 

 experimentally, and, after him, Mr. B. Brown, of Christchurch, 

 showed how extremely plastic these strange forms are. It is, 

 to be regretted, that the latter has not published an account 

 of his experiments, in some accessible scientific periodical. 

 Eecently, however. Dr. Cockayne, in his valuable studies on 

 the germination of New Zealand seedlings, has carefully 

 investigated the younger stages of a considerable number of 

 sp)ecies of Veronica. 



