This differs from T. impeditum in habit and appearance, the longer bracts (4-6, instead of 3-4 mm l.), the smaller (2.5 instead of 3 mm l.) fls., the beard on the cal.-lobes being of very few hairs, the style nearly twice as l., and in the different frt.
Herb, up to 300 mm tall. Lower flowers opening first. Perianth tube very short, lobes 1 mm long. Perianth lobes quite glabrous within or fringed with papillae. Flowers white.