1866, ? 
896, ] Anatomical and Physiological Researches. 373 
al Ageia eit Botanik it is not apparent that the Conifere 
| ied Ee zm airs but one is left to infer that they are sup- 
oF that - Pisobit a the fungi. Indeed he says (op. cit. 
Bt c. eer iza is a constant phenomenon in all forest 
_ a iferee, Betulacez and Conifere; that this sym- 
... ae found everywhere it has been sought, in all 
.. = at the fungus is present from the first year 
. ee eooehont its life upon all the absorbing roots; 
of De hise eigen of root-hairs is a striking peculiarity 
ee col — that the tree receives water and food ma- 
_. ihe rough the mycorhiza fungus. These state- 
. ope essentially in his ‘‘Die Krankheiten der 
ong ett*95) and are much more radical than his earlier 
gaat c-apeals of root-hairs of pines as normal in 
1. oa while mycorhiza generally appears in humus 
ee wii . publications he recognizes only one form of 
“ae ich he calls the ectotrophic. 
Sine ee 1893 had found intracellular mycelium in 
eh cree Von Tubeuf, also investigating num- 
a 4 all situations, has discovered that an intra- 
is of fee ium occurs very commonly among the living 
Franks seg oF. in many species of certain families so that 
bution rophic mycorhiza has an unexpectedly wide dis- 
I A ge 
9 > Beeetince, and in this family alone, ectotrophic my- 
one ot vagal either (a) as a purely external jacket, or 
ia et sending hyphe into the intercellular spaces of 
|, , on (c) as an intracellular mycelium only, with root- 
Sete ro as found that all Abietinez are capable of pro- 
ot-hairs at the same time. Endotrophic mycorhiza 
curs j 
in : a 
neither oes many conifers of other families, agreeing 
’ : . 
Frank’s ericaceous nor orchidaceous types, but 
having the 
— COnstitut; 
omstituting a coniferous type, characterized by 
he cortical cells, the outer 
‘al connection with 
hic mycorhiza. It 
luxy : 
tia 
of the Nd developed on mycorhizal roots. 
rs suggests that they are functional and experiments 
ivated in sterilized soils 
dem 
wit Shae this. Plants were cult 
abundant cial fertilizers; they developed normally, produced 
root-hairs and grew vigorously for two years.—K. 
