Description from Flora of China
Veronica tubiflora Fischer & C. A. Meyer, Index Sem. Hort. Petrop. 2: 53. 1835.
Roots glabrous. Rhizomes absent. Stems erect, 40-70 cm tall, simple, terete, apically villous. Leaves alternate, sessile, linear, 3-9 X ca. 0.6 cm, papery, abaxially densely villous, adaxially hispidulous, glabrescent, margin sparsely serrate, 1-veined. Inflorescences terminal, single, 5-15 cm, axis and pedicels sparsely villous. Calyx lobes lanceolate, ca. 1.5 mm, short ciliate. Corolla blue to pale red, ca. 6 mm; tube tubular, straight, apically hairy inside; limb actinomorphic; lobes ca. 1/4 of corolla length. Capsule ovoid, 2-2.5 mm, apex acute. Fl. Jun-Aug.
Meadows, thickets; low elevations. Heilongjiang, Jilin, Nei Mongol [Mongolia, Russia (Far East, E Siberia].