They're small, tricky little guys than range between 1-3 feet tall and weigh around 40-80lbs. Your size is Small.

Increase your Constitution by +2, and your Wisdom +1

Fungshrooms tend to be chaotic and never lawful.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of gray.

Your creature type is considered both humanoid and plant.

Drinking water lets you regain hit points equal to your level. If you have more hit points left, you can put the extra hit points as temporary hit points. You regain use of this trait after you finish a long rest.

Fungshrooms can live anywhere between 100-300 years. They're matured and can reproduce as soon as they sprout out of the ground from a spore cluster.

You can learn any language for one hour by touching another willing creature that speaks it with a Wisdom Check of 15 or higher. Otherwise you're born knowing Sylvan and Common.

Due to your soft and porous body you gain resistance to falling damage and only take half of the total rolled damage.

Any creature that grapples the Fungshroom or otherwise comes into direct contact with the Fungshroom's skin must succeed on a DC 13 Constitution saving throw or become poisoned for 1 minute. A poisoned creature no longer in direct contact with the Fungshroom can repeat the saving throw at the end of each its turns, ending the effect on itself on a success.

Once per Long Rest you can expel a cloud of spores in a 10ft radius around you. Any creature or ally caught within the cloud must make a Constitution Saving Throw of 12 + your Wisdom modifier or they fall asleep. The effects last two rounds.

You eat mushrooms all the time. Thus, you are immune to poison from fungi, and resistant to poison in general.