‘Matter abo 
1893.) The Genus Corallorhiza. : 169 
great mass of threads is confined to the interior of the cell 
_ and they are seldom found in the intercellular spaces. The 
tissue of the stem is most thoroughly permeated with these 
hyphe, and every cell outside of a narrow zone around the 
_ plerome, which so often contains starch, and back 2~3™ from 
the tip, is filled with them. The tissue exhibits nothing that 
_ Would in any way seem to indicate that the presence of these 
hyphe was anything other than beneficial and there can be 
Inst . 
og eating 4 root parasite, as has been supposed, the 
pends chiefly on the symbiotic condition for its food 
and this j 
1S Is taken by the hyphe from the decaying vegetable 
ut. If the plant 
ts have de was once a true parasite the 
#€ found on top aa and finally disappearéd, for no roots. 
degree in all of  paaiae This condition exists in an equal 
’ 
YMg condit; th and development; although some 
have oe nditions due t i 
Frou, Hitimave > Which are constant through the whole 
in the part of th Pitc mycorhiza that pass their whole life course 
the Orchidacea et below ground do no doubt exist in all of 
- , dition a he genus Corallorhiza, in the abundance of © 
Order. 7 “aT removed from the other members of this. 
