76 
HISTOLOGY OF VEGETABLES. 
number of angular cells (Fig. 60 ) containing spiral 
fibres. Immediately beneath the cuticle, on the upper 
edge of many of the sections, a row of small oval cells 
may be seen, in which the fibre is of very large size, 
FIG. 60 . 
Vertical section of the leaf of 
PleurotJiallis ruscfolia, showing 
fibro-cellular tissue in situ. 
fig. 61 . 
Cells of fibro-cellular tissue of 
PleurotJiallis ruscifolia more highly 
magnified. 
fig. 62 . 
and in some cases unrolled. If this layer of cuticle 
be peeled off after some slight 
degree of maceration, and the 
attached surface examined, a 
beautiful view of the fibro-cel- 
lular tissue, as shown by Fig. 
61 , is afforded ; the termina- 
tions of the fibres being seen 
at the free extremity of the cell. 
These cells may be isolated from 
the leaves of most Orchidaceous 
a, single cell of the leaf of . . 
Oncidium stramineum. b, cell plants, as in OnCldlUm Sirami- 
from testa of the seed of Cobcea T ,. n c L 
scandens. neum , T ig. 62, a, one ot the IinGSt 
