Eunotia rhomboidea
- Hustedt
- This diatom occurs in streams throughout the park.
- It is a common epiphyte on aquatic mosses in Abrams Creek, west end of park from Cade’s Cove to Chilhowee Lake, Blount Co., TN , Bower Creek, a tributary of Forge Creek in Abrams Creek watershed, Blount Co., TN ,Beech Flats Prong, the westernmost tributary of the Oconaluftee River, Swain Co., NC ,Cooper Creek, a tributary of the Tuckasegee River, Swain Co., NC ,Camel Hump Creek, a tributary of Cosby Creek, Cocke Co., TN ,Fighting Creek, tributary of the West Prong of the Little Pigeon River, Sevier Co., TN ,Husky Branch, tributary of the Little River above Elkmont, Sevier Co., TN ,Indian Creek, eastern tributary of Deep Creek, Swain Co., NC ,Madcap Branch ,Little Pigeon River, Middle Prong, near Hiking Club cabin, Greenbrier, Sevier Co., TN ,Ramsey Prong, tributary of the Middle Prong Little Pigeon River, Sevier Co., TN and TW (Twin Creeks?).