FWD 2 American Botanical Council: Identification of Medicinal Plants


Adonis vernalis L.

Standardized Common Name: Spring Adonis

Other Common Names: False Hellebore, Pheasant’s Eye, Yellow Adonis

Family: Ranunculaceae

Taxonomy: Adonis includes about 26 Eurasian species, all herbaceous. Several are known to contain cardiac glycosides. The annual species (which include A. aestivalis L., mentioned below) are taxonomically difficult; perennial species are well understood, although hybridization of A. vernalis with A. volgensis Steven ex DC. is common.

Description: Rhizomatous perennial herb. Stems 10–45 cm high, unbranched or occasionally branching. Basal leaves reduced to scales. Stem leaves alternate, sessile, 2–3-pinnatisect, feathery, composed of linear lobes 1–2 cm long. Flowers solitary, terminal, (3–)4–7(–8) cm in diameter; sepals 5, 0.75–1.5(–2) cm long, always shorter than petals, obovate, pubescent; petals 9–23, yellow, 1.5–3.5(–4) cm long, elliptical to oblanceolate, many-veined; stamens yellow, numerous; carpels numerous, separate, spirally arranged on receptacle. Fruit a head of achenes, 3–5 mm long, broadly obovate to almost spherical, with small curved beak at upper side of apex; surface pubescent, with netted wrinkles.

Parts in Commerce: Whole herb, with flowers and fruits

Identification:

Stems

  • Round, to 3 mm thick, often flattened above
  • Pithy, not hollow
  • Mostly green, brown below
  • Longitudinally striated
  • Glabrous or nearly so
  • Should not include base with scale-leaves and beginning of rhizome, because these parts are less potent and their harvest injures the plants

Leaves

  • Sessile on stems
  • 2–3-pinnately divided into numerous fine linear lobes
  • Lobes 1–2 cm long, up to 1 mm broad, with acute tips
  • Margins of lobes entire
  • Dark green, glabrous or nearly so
  • Taste bitter

Flowers

  • 3–8 cm in diameter, solitary
  • Sepals 5, greenish, pubescent, about half as long as petals
  • Petals 9+, variable in number, pale yellow to nearly white, glossy, many-veined
  • Petals elliptical, usually 2–4 cm long and <1 cm broad
  • Stamens numerous, yellow
  • Carpels numerous, spirally arranged

Fruits

  • Achenes 3–5 mm long, almost spherical to broadly and irregularly obovate
  • Surface pale green, hairy, wrinkled
  • Apex blunt, with small beak at upper side; beak <1 mm long, curved inward toward fruit surface but not wholly appressed to surface

Adulterants: A. aestivalis L., an annual species that has crimson or sometimes yellow petals, is reported as an adulterant, and similar-appearing perennial species may find their way into commerce. Any of the following features indicates adulteration:

  • Stems more than slightly hairy, or hollow
  • Leaves more than slightly hairy
  • Leaf lobes broader than expected, especially if margins are toothed
  • Sepals glabrous
  • Any petals red
  • Stamens dark purple
  • Fruit glabrous or with unwrinkled surface
  • Beak at apex of achene almost as long as fruit, extending straight outward rather than recurved, or appressed to fruit

References:

Lange D. 2000. Conservation and Sustainable Use of Adonis vernalis, a Medicinal Plant in International Trade. Bonn, Germany: Bundesamt für Naturschutz; 2000. Plant Species Conservation Monographs, No. 1.

Tutin TG, revised by Akeroyd JR. Adonis. In: Tutin TG, Heywood VH, Burges NA, et al., eds. Flora Europaea. 2nd ed, vol. 1. Cambridge: Cambridge University Press; 1993:267–269.

Youngken HW. Text-Book of Pharmacognosy, 5th ed. Philadelphia, PA: The Blakiston Company; 1943:336–338.


Figure 3: Adonis vernalis.