126 



PSEUDO-BULB 



[CH. 



shoot embracing one or several internodes becomes tuberous 

 and stored with water and reserve materials, as do the 

 fused sheathing bases of the leaves, the laminae of which 



Fig. 54. Bulbophyllum barbigerum, Sympodial orchid showing pseudo- 

 bulbs (Veitch). 



fall : these " solid bulbs " are usually termed pseudu-bulb^. 

 A striking example is that of one species of orchid with 

 pseudo-bulbs a yard or more long and as thick as the 



