Every living cell in an active condition is irritable, and one of the commonest physiological reactions of growing tissues is that of responding to the touch of a resistant body, as is vividly shown by the movements of the Sensitive plant, dionaea, etc.
"Disease in Plants"
H. Marshall Ward
As to the Drosera, the dionaea, and insectivorous plants in general, they are fed by their roots, like other plants; they too fix, by their green parts, the carbon of the carbonic acid in the atmosphere.
"Creative Evolution"
Henri Bergson
He studied also the contrivances of certain insectivorous plants, such as the Drosera and the dionaea, to seize their prey.
"Creative Evolution"
Henri Bergson