Xylosteon maximowiczii Ruprecht, Bull. Cl. Phys.-Math. Acad. Imp. Sci. Saint-Pétersbourg 15: 136. 1857; Caprifolium maximowiczii (Ruprecht) Kuntze; Lonicera maximowiczii var. sachalinensis F. Schmidt.

For description see under species complex. Distinguishing characters for this species are as follows: Leaves sparsely strigose or glabrous abaxially. Corolla purple-red. Fl. Jun-Jul, fr. Aug-Sep. 2n = 18, 36.

Forests, forest margins; 800-1800 m. ?Hebei, Heilongjiang, Jilin, Liaoning, ?Nei Mongol, Shandong [Japan, Korea, Russia].