Cobra grass (scientific name: Darlingtonia californica) is a genus of the Sarracenia family, a carnivorous plant, mainly distributed in northern California and Oregon. Cobra grass is a very well-known species of carnivorous plants, named after it resembles a cobra, and is the target of many players.
Cobra Sarracenia is one of the three Sarracenia plants in the Americas. The insect trap does not collect rainwater, but absorbs water through the roots and secretes it into the insect trap. People once thought that the cobra trap bottle will not secrete digestive enzymes, but must rely on commensal bacteria and protozoa to break down the prey into absorbable nutrients.
But later research showed that Cobra Sarracenia can secrete at least one proteolytic enzyme to digest its prey. The cells on the inner wall of the trap bottle absorb nutrients from the digestive juice and the root cells absorb nutrients from the soil is similar. But there is still a close and mutually beneficial relationship between Cobra Sarracenia and some animals and microorganisms.