[6] The leaves are lance-shaped or somewhat oval in shape with smooth or slightly toothed edges, the blades measuring up to 2.5 centimetres in length.

The following year he revised his earlier assessment, and created a new monotypic genus for the species, renaming it Glaucocarpum suffrutescens.

[6][8] The species was reclassified as Schoenocrambe suffrutescens by Stanley Larson Welsh and L. M. Chatterley in 1985,[9] although this was not a popular move: most documentation continued to use Glaucocarpum.

[1][3][10] In 2005 the Iraqi Brassicaceae expert Ihsan Ali Al-Shehbaz placed the species in Hesperidanthus as H. suffrutescens,[11] which is followed in the Flora of North America in the 2010 book about the Brassicaceae (written by Al-Shehbaz),[4] but not by the United States Fish and Wildlife Service, which used the name Schoenocrambe suffrutescens in 2010.

The substrate is a shallow layer of dry, alkaline, fine clay and white calcareous shale.

[1][10] Rollins mentions that at the type locality the Green River Formation surfaces in a high mountain bluff in a layer only some 20 feet wide, but some three miles long; this species only grows in small clumps studding this specific strip of dirt all down its length, and not in the other soils left or right.

[1] The area is sparsely vegetated, but other plants in the habitat include Barneby's catseye (Cryptantha barnebyi), which was apparently discovered by Rollins during his 1937 visit,[3][6] C. nana, C. grahamii, Yucca harrimaniae, Linum leptopoda, Mentzelia goodrichii, Gilia polycladon, Erigeron argentatus and Hymenopappus lugens.

[4] The plant is pollinated by several species of bees, likely including Dialictus perdifficilis, D. sedi, Evylaeus pulveris, Andrena walleye, A. prunorum and Halictus rubicundus.

[1] When the plant was added to the Endangered Species List, parts of populations had been destroyed during energy development activities.