Stenogyne cranwelliae is a perennial vine in the Lamiaceae (mint) family. The leaves are membranous and ovate with crenate margins and are attached to sharply four-angled stems with pubescence concentrated on stem angles. There are six flowers per verticillaster (an inflorescence in which the flowers are arranged in a whorl) and the corollas are a very pale pink with a straight tube. Flowers were described as having a smaller lower lip, long tubes, and are odorless.