Violet Fungus (CR 3)

Medium Plant
Alignment: Always neutral
Initiative: -1 (Dex); Senses: low-light vision

AC: 13 (-1 Dex, +4 natural), touch 9, flat-footed 13
Hit Dice: 2d8+6 (15 hp)
Fort +6, Ref -1, Will +0
Speed: 10 ft.
Space: 5 ft./10 ft.
Base Attack +1; Grapple +3
Attack: Tentacle +3 melee, 4 tentacles +3 melee
Damage: Tentacle 1d6+2 and poison
Special Attacks/Actions: Poison
Abilities: Str 14, Dex 8, Con 16, Int -, Wis 11, Cha 9
Special Qualities: Plant
Feats: -
Skills: -
Advancement: 3-6 HD (Medium-size)
Climate/Terrain: Any underground
Organization: Solitary, patch (2-4), or mixed patch (2-4 violet fungi and 3-5 shriekers)
Treasure: None

Source: Monster Manual

Violet fungi resemble shriekers and are often found growing among them.

A violet fungus looks like a human-sized mushroom with four tendril-like tentacles and a mass of small root-like feelers at its base that allow slow movement. Its coloration ranges from purple overall to dull gray or violet covered with purple spots.