Bloomslang

Bloomslang is a gemium plant from Plants vs Zombies: Jeopardy. It bites a random nearby zombie, injecting venom which will slowly drain its health until it dies. Its venom will kill any zombie within seven seconds, so it will take the same amount of time for Bloomslang to kill an imp and a gargantuar. This attack has an eight second recharge

Origin
Bloomslang is based off of the sub-Saharan rear-fanged snake, known as the Boomslang (Dispholidus typus), and the word bloom, which generally refers to plants

Plant Food Affect
When given plant food, Bloomslang will get a 75% health buff and kill zombies in three seconds for 30 seconds. It will also be invincible.

Trivia

 * This the first plant created by Dynamoterror dynastes
 * This is currently the only known rear-fanged snake in the PvZ universe (I think)