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Shell sub-globose, striated near the suture, brown, banded with white and fulvous; outer lip above slightly emarginate; umbilicus large, open; pillar termination nearly obsolete.

Shell cylindrical, polished, spire conic acuminated, very short; outer lip simple, inner lip thickened, tumid, columella with numerous slender plaits, aperture at the base truncatedly emarginate.

Similar, but pods torulose even when young, linear; style 1–2´´ long; seeds acutely margined rather than winged; petals emarginate.—Barrens of Ky. and Tenn. 3.

Skull: Broader, more angular and more nearly flat; zygomatic arches more widely spreading; zygomatic processes of maxillae heavier; posterior ends of nasals emarginate rather than rounded; upper incisors longer.

Petals.—Four to seven lines long; very broad; the upper deep purple, the others lilac, bluish, or white, veined with purple, with a yellowish base; the lateral bearded; the lowest emarginate.