1899] * CURRENT LITERATURE 22% 
witha diminution of the leaves, the roots, and the storage organs, indicating 
ani acquisition of highiy organized food-material ; a variation which 
wil have the same ultimate influence on the species as in Aplectrum, and is 
toubtless responsible for many of the so-called aberrant forms of leaves and 
fowers reported. 
This species and Corallorhiza Arizonica were examined with especial 
tas lost the stomata. The subterranean rhizome and its coralloid branches 
we each furnished with separate types of motile stomata, however, which 
fanction during the entire year, but clearly serve transpiratory and respiratory 
needs alone, 
The arrangement of the fungus is one which has been found in nearly all 
. ete endotropic mycorhizas hitherto examined, and its study has yielded 
me important results, 
The hyphae of the fungus extend themselves in comparatively straight 
threads longitudinally toward the tip of the organ in the sub-epidermal region 
“ttecortex, and this portion remains alive even in old members constituting 
what may be designated as the “vegetative mycelium.” The entrance of the 
gtd vegetative mycelium into the young cortical cells causes almost 
nee mm the character of the latter, and no important interchange 
: the two plants ensues in this region. 
” Srowth of the root and the contained vegetative mycelium goes on, 
ea “Sagi me mycelium sends out hyphal branches which extend 
: hgccy: - epidermis and may or may not traverse the hairs into the 
: wother set of very clearly absorbing organs. At the same time 
®t up and eae ches penetrate to the median region of the cortex and both 
tracted to the ae profound disturbances. The tips of the hyphe are 
A i Geied 0 of the nuclei. Dense coils and sometimes large 
| which serve as organs of interchange between the fungus 
: these seins Pa The starch contained in the cortical cells inhabited by 
"600, the organs of a the fungus; then, with the maturity of this general 
mterchange and the large amount of contained proteid 
a? te higher plant. 
~The seg Slant ; aracter of the partnership of the two plants : 
: fingus, and yields Eruiics a habitat for the vegetative mycelium of the 
feagus takes up sa pertain carbohydrate foods, principally starch. The 
“AS, conducts Say Products from the soil by means of its external 
mat and man €m to the inner branches in the cortex of the higher 
mactures.proteids, of hich ion i d in its own met- 
ee of course, but th es ty) — a portion Is use 
4 lfollowsas a nec € greater part is yielded to the seed plant. : 
that mycorhis “4 ary Corollary from the above conclusions, that Frank's 
a’ adaptations are fungus traps and that the seed plant 
: ” St free and beco 
