Eranthis

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Ordo: Ranunculales

Familia: Ranunculaceae
Subfamilia: Ranunculoideae
Tribus: Cimicifugeae
Genus: Eranthis
Sectiones: E. sect. Eranthis – E. sect. Shibateranthis
Name

Eranthis Salisb., 1807, nom. cons.

Typus: E. hyemalis
(L.) Salisb.

Synonyms

Heterotypic
Cammarum Hill, Brit. Herb. 47. 23. 1756, nom. rej.
Helleboroides Adans., Fam. 2: 458. 1763, nom. rej.
Koellea Biria, Hist. Nat. Renoncules 21. 1811.
Robertia Mérat, Nouv. Fl. Env. Paris 211. 1812, nom. illeg. non Scopoli (1777).
Shibateranthis Nakai, Bot. Mag. (Tokyo) 1937.

Species overview

E. albiflora – E. byunsanensis – E. cilicica – E. hyemalis – E. keiskei – E. lobulata – E. longistipitata – E. pinnatifida – E. sibirica – E. stellata
References

Farr, E. R. & Zijlstra, G. eds. (1996-) Index Nominum Genericorum (Plantarum). 2009 Oct 01 [1].
Salisbury, R.A. 1807. Trans. Linn. Soc. London 8: 303.

Vernacular names

English: Eranthis
suomi: Talventähdet
日本語: セツブンソウ属
中文: 菟葵属

Eranthis is a genus of eight species of flowering plants in the buttercup family Ranunculaceae, native to southern Europe and east across Asia to Japan.[1][2][3] The common name winter aconite comes from the early flowering time and the resemblance of the leaves to those of the related genus Aconitum, the true aconite. Like the notoriously toxic Aconitum (and, indeed, many other genera of the Ranunculaceae) Eranthis is poisonous, although its chemistry is different, the toxic compounds present being mainly cardiac glycosides of the bufadienolide group similar to those found in Adonis vernalis, rather than the extraordinarily virulent alkaloids of Aconitum.[4][5]
Foliage at the end of flowering
Distribution map of eight or nine species of Eranthis in Europe and Asia. (Try of presentation based on natural Distribution givien in wikipedia pages (en, de, ru).)

They are herbaceous perennials growing to 10–15 cm (4–6 in) tall. The flowers are yellow (white in E. albiflora and E. pinnatifida), and among the first to appear in spring, as early as January in mild climates, though later where winter snowpack persists; they are frost-tolerant and readily survive fresh snow cover unharmed. The leaves only expand fully when the flowers are nearly finished; they are peltate, 5–8 cm diameter, with several notches, and only last for 2–3 months before dying down during the late spring.

Species in this genus are spring ephemerals, growing on forest floors and using the sunshine available below the canopy of deciduous trees before the leaves come out; the leaves die off when the shade from tree canopies becomes dense, or, in dry areas, when summer drought reduces water availability.

They are popular ornamental plants grown for their winter or early spring flowering. E. hyemalis is widely naturalised in northern Europe and North America.

Species

Eranthis albiflora. Western China.
Eranthis cilicica. Southwestern Asia.
Eranthis hyemalis. Southern Europe.
Eranthis lobulata. Western China.
Eranthis longistipitata. Central Asia.
Eranthis pinnatifida. Japan.
Eranthis sibirica. Northern Asia.
Eranthis stellata. Eastern Asia (northern China, Korea, southeast Russia).
Eranthis byunsanensis. South Korea