149 
specimens and the specimens from Hekla Havn gave a slight 
reaction for oil. As is the case in the stem, the quantity of 
the oil which occurs, doubtless stands in inverse ratio to the 
starch-contents. 
The lower part of the leaf, the part enclosed by the sheath, 
differs anatomically from the upper part. But here I shall only 
Dé ne 9 Po 
Fig. 5. Diapensia lapponica. 
The leaf. A, stoma; B, the epidermis of the upper surface seen from above; (, epidermis 
of the upper surface with cuticle; the thickenings in the lateral walls are indicated: 
D, pores between cells of the spongy parenchyma; E, cells of the spongy parenchyma; 
F, stomata. (Greenland) (H. E. P.) 
point out that neither stomata nor epidermis, containing water, 
occur in this part. 
The stem (Figs. 6 and 7). The primary cortex has been 
figured by Ten (Tab. I, fig. 11); it presents no features that are 
