98 



suggested that the reduced fonnation of hairs on their roots was 



due to the fungus-hyphae liehaving physiologically as root-hairs. 



Johow, in opposition to Frank, states that the non-chloro- 



phyllous Wiillschhayclin, a relative of Neottia, shows no trace of 



Fio. 19. — Coraltiorhizo, iiincUa Br. 

 (v. Tubeuf phot.) 



Fio. -20.— Neotlia Nidus avis Ric 

 (v. Tubeuf phot.) 



fungal hypliae about its roots, and yet derives nourishment direct 

 from humus. The same author found among roots of the Bur- 

 manniaaae, some free from fungi, and some with tlie rind, and 

 even the epidermis full of mycelium. 



(2) On chlorophyllous plants living amongst humus. 



Accordnig to the investigations of Frank, all our Ericaceae, 

 p]pacrideae, and Kmpetraceae, living in the humus of moor, heath, 



