306. . THE VEGETABLE WORLD. 
ground as in the Orcuts. (2) Fleshy tubercles, having a bud at 
their extremities containing amylaceous granules for the nutrition 
of the plant. (3) Fleshy branching bodies of tortuous and 
Fig. 359.—Forms of Orchidaceous Flowers. 
angular form, as in Neottia, or resembling tubers, as in Gastrodia- og 
(4) Simple or branched shoots, capable of extension, protruding 
from the stem into the air, and formed of a woody and vascular | 
axis, covered with cellular tissue, the subcutaneous layer gti a 
often green, and composed of large reticulated cells, the points ° Ae 
the roots being usually green, but sometimes red or yellow. » 
The stem is in its simplest state in Ophrydee, where it is only # 
