GOEBEL: REGENERATION IN PLANTS 203 
place on an entirely immersed fruiting hypha the external factors 
influential in the production of fruiting hyphae are lacking and a 
vegetative hyphal branch developes. It appears therefore that the 
-above-mentioned relation generally holds good. 
Formerly I believed that in certain cases in fungi a direct 
restoration of wounded fruiting bodies could take plaee. I cut 
Fic. 3. Stereum hirsutum. Fruit-bodies from beneath. 
— 
pieces from the fruit of Sterewm /ursutuim, and found after some 
months, growth being slow in this instance, that the bodies had 
reassumed somewhat the shape of the fruit before wounding. 
Closer investigation showed that this was not the case however. 
The fruit-body exhibits a characteristic zonal formation; (/. 3). 
The new formation does not in any way add to the zone formation 
of the old fruit-bodies but is entirely independent of it (/ 4). 
Fic. 4. Stereum hirsutum, Regeneration of the fruit-bodies. The old portions 
are dotted. 
They are actually new fruit-bodies, but since they are scarcely 
individualized they soon grow together with the old fruit and so 
appear as regenerated parts of the latter. Injured fruit-bodies 
growing in close proximity often become concrescent and so show 
that the above conclusion is correct. 
