85 
devoid of chlorophyll occur. The intercellular spaces are in 
many cases formed by the separation of two neighbouring 
membranes and not normally either between three cells or 
between the lobes of two as may be conjectured to be the 
case in Pir. grandiflora and in minor. In regard to the 
Chl 
Fate. er 
KL ew OO AK 
Es 
Fig. 3. Pirola secunda. 
1, Leaf in transverse section. 2, Lower mesophyll with the characteristic intercellular 
spaces. 3, The epidermis of the lower, 4, of the upper surface. >< about 430. 
(Denmark: Hornbek Plantage). (H. E. P.) 
structure of the leaves the two northern specimens agree exactly 
with those from Denmark. 
The structure of the stem presents no feature of import- 
ance it corresponds essentially with that of the two mentioned 
above. | 
No examination has been made of the roots. 
