Planothidium lanceolatum - (Bréb. ex Kützing) Round & Bukhtiyarova

This is one of the commonest diatoms in streams throughout the park.



We have records from 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, 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, Hannah Mountain Trail, rocks in swift stream, Blount 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 and Ramsey Prong, tributary of the Middle Prong Little Pigeon River, Sevier Co., TN.