Possible Stalk

This doesn't exist in Minecraft; it's just fiction.

Possible Stalks are the only Possible Variant plants. They are like the combination of the Nether Wart and Pumpkin/Watermelon Stalks. They are very important for Possible Mobs and for making a Potion.

Uses
They are used for making Flight Potions by obtaining Possible Pollen.

Obtainance
To obtain them you need to Clip them off using Shears but to get  Possible Pollen you can use your bare hands.