Jennines & Hanna—Corallorhiza innata R. Br. IL 
plant as being at least by far the larger shareholder in the sym- 
biotic relationship, if it can be regarded as such. More probable 
seems the view that there is no symbiosis, but that the fungus is 
captured and utilised by the orchid without any compensating 
benefit to itself. 
EXPLANATION OF PLATES I. anp II. 
Piatt I.—Fig. 1.—A plant of Corallorhiza innata, R. Br. (natural size) showing 
(a) aerial shoot with terminal raceme of flowers; (4) coralloid rhizome; (c) fungus 
mycelium ; (d@) young sporophores of Clitocybe infundibuliformis. Figs. 2 and 4.—Aeriah 
branch of the rhizome; surface view and section, showing the buds sheathed in 
brown scales, the scars of older, fallen scales, and the tufts of fungus catching 
(“mykokleptic’’) hairs. Figs. 3 and 5.—Similar views of the termination of 
subterranean lobes of the rhizome. 
Puate II.—Transverse section through portion of the rhizome, showing a group- 
of the hairs which collect and transmit the hyphe of the mycorhiza. 
