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179.0000 Family Papaveraceae Juss.; Gen. Pl. [Jussieu] 235 (1789), nom. cons.
43 genera, ca. 1000 spp. Revised classification: Peng et al. (2024)
Species listed in database: 1025; hybrids: 19
= Chelidoniaceae Martinov; Tekhno-Bot. Slovar 124 (1820)
= Eschscholziaceae Ser.; Fl. Jard. 2: 106 (1847)
= Fumariaceae Marquis; Esq. Règne Vég. 50 (1820), nom. cons.
= Hypecoaceae Willk. & Lange; Prodr. Fl. Hispan. [Willkomm & Lange] 3: 875 (1880)
= Platystemonaceae Lilja; Skånes Fl., ed. 2: 862, 979 (1870)
179.4208 Genus Hylomecon Maxim.; Prim. Fl. Amur. 36 (1859)
Distribution: Temperate E-Asia
Species listed in database: 2
= Stylomecon G.Taylor; J. Bot. 68: 140 (1930)
species :
Hylomecon japonicum (Thunb.) Prantl; Nat. Pflanzenfam. [Engler & Prantl] III, 2: 139 (1889)
Distribution: China (C-China, E-China, NE-China); North Korea; South Korea; Japan (Honshu)
36 CHI 38 JAP KOR NKO
Synonyms: hidden
= Chelidonium japonicum f. palliflavidum Moriya; J. Phytogeogr. Taxon. 27: 94 (1980)
= Chelidonium japonicum Thunb.; Fl. Jap. [Thunberg] 221 (1784), et Syst. Veg., ed. 14: 489 (1784)
= Chelidonium uniflorum Siebold & Zucc.; Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 4(2): 171 (1845)
= Hylomecon japonica var. dentipetala W.Du; Phytotaxa 419(2): 215 (2019)
= Hylomecon japonicum f. palliflavidum Moriya; J. Phytogeogr. Taxon. 27(2): 94 (1980)
= Hylomecon japonicum var. subincisa Fedde; Pflanzenr. [Engler] IV.104, Heft 40 (Papaver.-Hypec.-Papav.): 210 (1909)
= Stylophorum japonicum (Thunb.) Miq.; Ann. Mus. Bot. Lugduno-Batavi 3: 11 (1867)
variant :
var. dissecta (Franch. & Sav.) Fedde; Pflanzenr. [Engler] IV.104, Heft 40 (Papaver.-Hypec.-Papav.): 210 (1909)
Distribution: China (Hubei, Shaanxi, Sichuan); Japan
36 CHI 38 JAP
Synonyms: hidden
= Hylomecon dissectum (Franch. & Sav.) Honda; Bot. Mag. (Tokyo) 52: 519 (1938)
= Hylomecon hylomeconoides var. dissectifolia Y.N.Lee; Bull. Korea Pl. Res. 4: 27 (2004)
= Hylomecon japonica f. dissecta (Franch. & Sav.) S.Akiyama; Fl. Jap. [Iwatsuki et al., eds.] 2a: 445 (2006), nom. inval.
= Hylomecon japonica f. lanceolata (Yatabe) S.Akiyama; Fl. Jap. [Iwatsuki et al., eds.] 2a: 445 (2006)
= Hylomecon japonica var. lanceolata (Yatabe) Makino; Bot. Mag. (Tokyo) 12(131): (16) (1898)
= Hylomecon lanceolatum (Yatabe) Honda; Bot. Mag. (Tokyo) 52: 519 (1938)
= Stylophorum japonicum var. dissectum Franch. & Sav.; Enum. Pl. Jap. 1: 27 (1875)
= Stylophorum lanceolatum Yatabe; Bot. Mag. (Tokyo) 6: 308 (1890)
species :
Hylomecon vernalis Maxim.; Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 9: 36 (1859)
Distribution: Russian Far East (Amur, Khabarovsk, Primorye); China (C-China, E-China, NE-China); Japan (Honshu)
31 RFE 36 CHI 38 JAP
Synonyms: hidden
= Chelidonium vernale (Maxim.) Ohwi; Bull. Natl. Sci. Mus. Tokyo 33: 73 (1953), et Fl. Jap: 561 (1953)
= Hylomecon vernalis f. albilutescens Y.N.Lee; Bull. Korea Pl. Res. 3: 6 (2003)
= Hylomecon vernalis var. sasundaeensis Y.N.Lee; Bull. Korea Pl. Res. 2: 6 (2002)
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A complete, synonymic checklist of the Higher Plants of the World


Version 25.11 (Nov. 11th, 2025)

Covering 357,753 accepted species,
8,806 hybrids, 48,075 accepted infraspecific taxa and 1,004,944 synonyms,
in total 1,419,578* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]


With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life