PuateE I. 
Terminal rootlets of Cansjera Rheedii with young haustoria (natural 
size and magnified). The rootlets are practically bare of 
root hairs, but the young haustoria are somewhat thickly coated 
with them (h, h). 
Young haustoria (natural size). Their surface is still smooth. 
Older haustoria (natural size and magnified). These are becoming 
wrinkled and warty and are covered with lenticels. 
Figs. 4-7. Old, irregularly-lobed haustoria (natural size, No. 5 also magni- 
Fig. 8. 
fied). The sucker is shown in 5 and 6 and, in the latter case, 
a piece of the host’s bark is attached. The haustoria are 
seen to be much broader above than at the point of their 
attachment. 
An early stage of haustorial development, cut transversely. Cut 
with the microtome, stained with Delafield’s hematoxylin 
and mounted in Canada balsam. The haustorium is fixed 
on a root of Abrus precatorius. The nucleus is developing 
asa median, oval area. a, part of the procambial strand 
magnified further : b and c, the surface of attachment to the 
host’s bark. 
