384 B u r n s and H e d d e n, Conditions inüuencing regeneration of hypocotyl. 
Third, tliat plants which as seedlings did not normally 
produce these bnds often produce them, near tlie surface of tlie 
ground in tlie fall. These bnds often live over winter and 
produce a new plant the following spring. 
Fourth, tliat these adventitious shoots did not have the 
normal leaf arrangement. The leaves were not transversely 
placed bnt perpendicularly and that the leaves were not of the 
same size. The anisophylly was well niarked the lower leaf 
being the larger. 
Küster 1 ) added to the above work some experiments, in- 
troducing a wound Stimulus. He cut away the cotyledons at 
different lengths below their insertion and found that the 
Big. 1. Linum usitatissimum. 
[Enlarged.] Cotyledons removed Jan 25 1904 when seedling was 2 cm high. 
Photographed March 3. In plant to the right the first bud was removed. 
tendency to the production of adventitious buds was greatly 
increased. While other writers found the production on a few 
individuals. Küster found in the case of Anagallis coerulea and 
Linaria Cymhalaria that every wounded individual produced 
one or more such hypocotyl buds. There was no hxed law as 
to place of origin in the hypocotyl. 
Küster 2 ) further confirmed the previous observations in 
regard to anisophylly. Experiments ainied to determine the 
cause of this phenomenon were not successful. 
b Küster, Beobachtnngen über Begenerationsersclieinnngen an 
Pflanzen. (Beih. z. Bot. Centralbl. Bd. XIV. p. 316.) 
— Beobacht, über Begenerationsersclieinnngen an Pflanzen. II. (Beih. 
z. Bot. Centralb. Bd. XY. p. 421.) 
