WOODY TISSUES. 
91 
their true nature, after careful observation, was fully 
confirmed by the fossil specimen. 
In some of the orchidaceous plants, as those of the 
genus Oncidium , and especially in Aporum anceps , 
small globular bodies are found projecting from the 
woody fibres, as represented in Fig. 79 , A. Sometimes 
they occur in many rows, as shown at A, or in a single 
one as at b, or in two rows as at c, each being sur- 
rounded by a ring-like marking. These bodies, like 
those in the fossil specimens, are sometimes found loose, 
as shown by e, but, the places they occupied, as repre- 
sented at c, were cavities in the wall of the fibre. 
FIG. 79 . 
FIG. 80 . 
a, woody fibre of Aporum anceps 
with four rows of globular bodies, b, 
woody fibre with one row. c, woody 
fibre in which the cavities occupied 
by the globular bodies are shown, d, 
globular bodies projecting from the 
side of a woody fibre, e, globular 
bodies detached from the fibre. 
a, woody fibre of Salisburia adian- 
tifolia with upper surface in focus. 
b, woody fibre of the same plant with 
both upper and under surfaces in fo- 
cus. c, woody fibre of Cycas revoluta 
showing at the upper part the pores 
on the under, and at the lower those 
on the upper surface. 
In some plants, as in Cycas revoluta , the central spot or 
pore is not round, but more or less oval, and is inclined 
