ths] The Genus Corallorhiza. 167 
surrounded by a sheath of collenchyma which gives the 
vascular tissues somewhat the appearance of the rad- 
_ lal bundles of roots. The arrangement of bundles inside the 
sheath is as one might expect, usually irregular, but in each 
individual bundle the phloem occupies the peripheral side. 
 Atthe apex of the stem we find about the normal arrange- 
_ nent of parts. The leaves originate near the apex as lateral 
_ wutgrowths in acropetal order. The primary meristem of the 
_ sowing point is very active and several immature leaves with 
ply breaks away and there remains a ring or scar 
In the depressions between these 
the stem. They are quite large, thin 
protoplasm with a very large nucleus. 
dto bea parasite, but the weight of evi- 
t 
hraphides. It may be possible that the 
Plants to hi me of its nourishment from the roots of 
Ti witch it clings by means of its papilla with 
2 € papilla are found equally on all 
Conn oe » and that too on plants which are in 
io with any other living plant; while those 
; Bitive 5 Ordinary soil, free from the roots of all other 
questj oy well with those in the woods. ; 
te its fluid once presents itself, how does the plant 
Since in the ithout the intervention of chlorophyll, es- 
be. € autumn there is a ring of cortical tissue 
°-vascular system the cells of which are filled 
