Derwentia perfoliata (R.Br.) Raf.

Leaves stem-clasping, often connate at the base, ovate to narrow-ovate, acuminate or acute, glaucous, usually entire. Corolla bluish, streaked with purple, 5–6 mm long. Herb up to 1.5 m high. Higher Blue Mts Open forests. Fl. summer. Digger’s Speedwell