Purple Mushroom Caves

Proposing a new type of cave biome that grows edible purple mushrooms. They would have two parts, mycelium and mushrooms. The mycelium would grow along cave floors, walls, and ceilings, giving the stone or deepslate a glowing purple texture that emits a low light level, maybe 3. The mushrooms would grow out of the mycelium, at any orientation, having three sizes, the largest of which is almost a block wide. They would glow with a light level of 10. If you harvest them at their full size, you can eat them to restore one and a half joints of hunger, and give you a limited night vision for 15-20 seconds. This night vision would tint your vision purple, and only raise everything to light level 7. If you cook them, it increases the hunger bar restoration, but the effect goes away. These caves could also maybe be the home of a new, subterranean humanoid race, like gnomes.