JENNINGS & Hanna— Corallorhiza innata R. Br. 5 
during three summers, and these experiments tend to show that so 
far as this district is concerned the 
mycorhiza of Corallorhiza is a hymeno- 
mycete and commonly an agaric. 
In addition to the agaric referred 
to above, there are others which have 
been found in very close proximity to 
the Corallorhiza; for instance, species 
of Tricholoma (T. ionides, Bull?), My- 
cena (IM. umbellifera, Sch. ?), and Corti- 
narius (C. subferrugineus, Batsch.). It 
is also interesting to note that one of 
the subterranean hymenomycetes, evi- 
dently the Hysterangium stoloniferum of 
Tulasne, has been found in several 
instances among the rhizomes. None of 
the cases observed showed any special 
hyphal characteristics to absolutely iden- 
tify them with the mycorhiza, but their 
mode of occurrence leaves little doubt 
as to the existence of a real connexion 
between the mycelium of these fungi 
and the symbiote or victim of the Coral- 
lorhiza. 
The rhizome when carefully removed 
from the soil and gently washed, shows, 
scattered over the surface of the grow- 
ing shoots, numerous papille, from 
which tufts of hairs arise (fig.-1, 0). 
These hairs are, on an average, ‘810 mm. 
to 432 mm. in length, and :054 to 027 
mm. in breadth: some have rounded 
apices, others appear abruptly truncated ; 
and intermediate stages exist which are of 
great interest. At the tips of the hairs 
changes evidently of a chemical nature 
can be seen in progress; the apices lose 
Fic. 4. 
Three cells from the outer layers 
of the cortex, showing hyphe 
piercing the cell-walls. 
their definite outline, the walls break down and appear mucila- 
ginous and granular as if ferment-action was going on. The walls of 
