S'gagerat

S'gagerat is a type of plant native to the world of Vulcan (planet). They were predatory plants that were known to exist in Vulcan's Forge. They had long tendrils which extended beneath the sand which lay in until prey approached. After which, the tendrils would instantly snap around the plant's central core where large animals such as Sehlat would be trapped. Once the prey was within its grip, the tendrils would inject powerful soporific into the captured 'food' which would allow for a slow digestion.

If the prey managed to escape, the S'gagerat would extend its tentacles in search for its quarry. Typically, very few would survive such attacks from these deadly plants which were known to kill Vulcans.

(TOS novel: Vulcan's Soul Exiles)