It has been some time since I played Morrowind, but I don't recollect any plant-like features in that game that looked like a Stentor. A stentor is a large single-celled organism shaped like a horn. It attaches itself to a surface, and feeds using small tentacles that pull toward its large mouth (the wide end of the horn). I also recollect seeing these in Meridia's realm. I'm curious if this is Meridia's touch on the land of Morrowind? They're pretty cool looking, and I suspect it might be related to the watery themes of the Dreugh/Ruddy Man, Vivec's Antlers, etc. What is the deal with those things? I'm hopeful someone with a lore knowledge recognizes it.
US/AD - Dodge Hopper - Vet Imperial Templar | US/AD - Goj-ei-Raj - Vet Argonian Nightblade
US/AD - Arondonimo - Vet Altmer Sorcerer | US/AD - Azumarax - Vet Dunmer Dragon Knight
US/AD - Barkan al-Sheharesh - Vet Redguard Dragon Knight | US/AD - Aelus Vortavoriil - Vet Altmer Templar
US/AD - Shirari Qa'Dar - Vet Khajiit Nightblade | US/AD - Ndvari Mzunchvolenthumz - Vet Bosmer Nightblade
US/EP - Yngmar - Vet Nord Dragon Knight | US/EP - Reloth Ur Fyr - Vet Dunmer Sorcerer
US/DC - Muiredeach - Vet Breton Sorcerer | US/DC - Nachtrabe - Vet Orc Nightblade
EU/DC - Dragol gro-Unglak - Vet Orc Dragon Knight | EU/DC - Targan al-Barkan - Vet Redguard Templar
EU/DC - Wuthmir - Vet Nord Sorcerer | EU/DC - Kosh Ragotoro - Vet Khajiit Nightblade
<And plenty more>