Primula sieboldii É.Morren
Section Cortusoides
Link to Flora of China description
Type specimen: Von Siebold, s.n., ex cultivated from Japan 1862.
Auganthus sieboldii (É.Morren) Soják (syn)
P. cortusoides L. f. lactiflora Nakai (syn): Fl. Kor. 2: 78 1911. pro var. patens
P. cortusoides L. var. amoena Lindl.(syn): Gard. Chron. 1218. 1865.
P. cortusoides L. var. incisa Miq. (syn): Ann. Mus. Bot. Lugduno-Batavi 3: 119. 1867.
P. cortusoides L. var. striata Lindl.(syn): Gard. Chron. 1218. 1865.
P. cortusoides L. var. patens Turcz. (syn)
P. cortusoides L. var. sieboldii (É.Morren) G.Nicholson (syn): Ill. Dict. Gard. 3: 219. 1887.
P. gracilis Stein (syn): Gartenflora 35: 240. 1886. (P. cortusoides x P. sieboldii)
P. patens var. genuina Skvortzov (syn): Lingnan Sci. J. 6:219. 1928.
P. patens var. manshurica Skvortzov (syn): Lingnan Sci. J. 6:219. 1928.
P. sieboldii É.Morren f. patens (Turcz.) Kitag. (syn): Neolin. Fl. Manshur. 353. 1939.
P. sieboldii É.Morren f. albiflora H.Hara (syn): J. Jap. Bot. 10: 771. 1934. (PDF)
P. sieboldii É.Morren f. albiflora Y.N.Lee. (syn)
P. sieboldii É.Morren f. hortensis Takeda (syn): Notes Roy. Bot. Gard. Edinburgh 8: 84. 1913.
P. sieboldii É.Morren f. incisa (Miq.) Makino (syn): J. Jap. Bot. 1(6): 21. 1917. (PDF)
P. sieboldii É.Morren f. lactiflora (Nakai) H.Hara (syn): J. Jap. Bot. 20:328 1994. (PDF)
P. sieboldii É.Morren var. patens (Turcz.) Kitag. (syn)
P. sieboldii É.Morren f. spontanea Takeda (syn): Notes Roy. Bot. Gard. Edinburgh 8: 84. 1913.
P. sieboldii É.Morren f. patens (Turcz.) Kitag. (syn)
P. patensTurcz. (nom. nud.)
P. patens (Turcz.)Turcz. ex E.A.Busch (nom. illeg.): Type specimen: Turczaninow 918 (Dahuria, 1832) resides at LE
Epithet: Named for Philipp Franz von Siebold.
Distribution: Japan, Korea, Russia, China.
This species was initially included within P. cortusoides, which does not overlap in distribution and differs especially in the calyx. Apparently no type material of P. sieboldii was preserved, and it was described from cultivated plants. This species has been cultivated for 400 years in Japan and known there as Sakurasou (サクラソウ), resulting in hundreds of named garden selections (see last 3 images as examples). Only a few wild populations still exist in Japan. In Korea it is known as 앵초(Aeng-cho). P. patens is considered a synonym by many authorities but is considered a distinction species by Russian authorities. This requires clarification. Many synonyms exist and there are likely more than those listed above. P. sieboldii is a hairy species, with ovate leaves, cordate at the base, lobulate margin, and a distinct pilose petiole. Scape 6-30cm, pubescent, with an umbel of 2-15 rose-violet to lilac-purple or white flowers. Bracts linear-lanceolate, calyx widely campanulate, cut to the middle or more into lanceolate patent lobes, acute at the apex. Easily propagated by division of the long, slender rhizome.
