• Scientific Name: Micranthes nelsoniana (D.Don) Small
• Ref: N.L.Britton & al. (eds.), N. Amer. Fl. 22:147. 1905
• Synonyms: Evaiezoa punctata Rafin., Micranthes arguta Small, M. punctata Losinsk., Robertsonia punctata Haw., Saxifraga arguta D. Don, S. denudata Nutt. ex Torr. & Gray, S. geum Pall., S. gracilis Steph. ex Sternb., S. megalodon Nasaroff, S. nelsoniana D. Don, S. punctata subsp. arguta (D. Don) E. Murray, S. punctata var. nelsoniana (D.Don) Engl., S. punctata subsp. nelsoniana (D.Don) Hultén, S. punctata subsp. redowskyana (Sternb.) Vorosh., S. redowskyana Sternb., S. rotundifolia Pall. ex Georgi, S. semidodecandra Walp.
• English Common Name: heartleaf saxifrage
• Chinese Common Name: 斑点亭阁草 bāndiǎn tínggé∙cǎo, 斑点虎耳草 bāndiǎn hǔ’ěr∙cǎo
• Japanese Common Name: チシマイワブキ [千島岩蕗] chishimaiwabuki
• Family: Saxifragaceae
• Genus: Micranthes
• Distribution: Pinus koraiensis forests, forest margins, rock crevices; 1700-2300 m. Heilongjiang, Jilin, Nei Mongol [Korea, Mongolia, Russia; North America].
• Photo: Mt. Changbai, Jilin

Stem 22-33 cm tall, glandular pilose. Petiole 4-10.7 cm, glandular pilose; leaf blade reniform, 1.6-5.5 × 1.9-6.5 cm, adaxially glandular pubescent, palmately veined, margin 19-21-dentate, glandular ciliate, teeth broadly ovate. Inflorescence paniculate, 5-15 cm, 30-52-flowered; branches and pedicels glandular hairy. Hypanthium ca. 0.6 mm, glabrous. Sepals reflexed, ovate to broadly so, 0.7-1.3 × 0.7-1 mm, glabrous, 1-veined. Petals white or lilac, ovate, 2.1-2.7 × 1.6-1.8 mm, 1-veined, base contracted into a claw 0.5-0.7 mm, apex retuse. Stamens 2-3 mm; filaments clavate. Carpels subsuperior to superior, united only at base, purple or green, conical, with a basal, annular nectary; styles erect or slightly spreading, 0.2-0.5 mm; follicles erect or slightly divergent, bottle-shaped, 5-6 mm. Fl. Jul, fr. Aug. 2n = 28, 30, 32, 40, ca. 60, 70, 76, 80, 84, ca. 88. (Flora of China)

Mt. Changbai, Jilin