To elucidate the taxonomic identities of Korean Adonis, the pollen morphology of 18 (14 Korean, 3 Japanese, and 1 Chinese) populations were studied with light and scanning electron microscopes. The populations were grouped as follows: Type I. A. amurensis (Korea: Choongnyong Mt., Chunma Mt., Juksang Mt., and Jumbong Mt.): Foveolae elongate, small, 27-40 per 49зн2, 2-3(5) aligned; echinae 0.9-1.24зн length and 2-4/49зн2. Type II. A. ramosa (Japan: Tashiro): Foveolae round, large and 20/49зн2, rarely aligned; echinae 0.8зн high and 4/49зн2. Type III. Foveolae round to elongate, small to large, 23-55/49зн2, sometimes aligned; echinae 0.31-0.74зн high and 6-17/49зн2. Subtype 1. A. multiflora (Korea: Kwanumsa and Yorimok; Japan: Ryonuma): Echinae 6-8/49зн2, 0.35-0.59зн in length, 0.44-0.81зн in width, L/W=0.73-0.80; foveolae 27-40/49зн2, similar sized. Subtype 2. A. pseudoamurensis (Korea: Jangbong Ir., Dukjuk Ir., Palgong Mt., Naesosa, Kwanchon, Euryoung, and Keryong Mt.; Japan: Nishi-yoshino-mura; China: Kirin): Echinae 6-17/49зн2, 0.31-0.74зн in length, 0.24-0.79зн in width, L/W=0.84-1.29; foveolae 23-55/49зн2, size variable.

Key words: Adonis, pollen morphology