Oxalis acetosella

Oxalis acetosella L., Sp. Pl. 433 1753. (syn: Acetosella alba (D.Don) Kuntze; Oxalis acetosella subsp. leucolepis (Diels) C.C.Huang & L.R.Xu; Oxalis acetosella var. purpurascens Mart.; Oxalis acetosella var. rosea Peterm.; Oxalis acetosella subsp. taimonii (Yamam.) S.F.Huang &
T.C.Huang; Oxalis alba Steud.; Oxalis americana Bigelow .; Oxalis leucolepis Diels; Oxalis martiana var. taimonii (Yamamoto) S.S.Ying; Oxalis nemoralis Salisb.; Oxalis parviflora Lej.; Oxalis taquetii R. Knuth; Oxalis vulgaris Gray; Oxys acetosella (L.) Scop.; Oxys alba Lam.; Oxys pliniana Bubani; Oxys vulgaris Rupr.);

Albania, Austria, Belgium, England, Czech Republic, Slovakia, Denmark, Faeroe
Isl., Finland, Germany, Ireland, Switzerland, Netherlands, Hungary, Iceland,
Norway, Poland, Romania, Slovenia, Croatia, Macedonia, Sweden, Greece, Andorra,
Spain, Portugal, Estonia, Latvia, Lithuania, C-, N- & W-European Russia,
Belarus, Ukraine, +?Algeria, Northern Caucasus, Georgia [Caucasus], Siberia
(W-Siberia, C-Siberia), Kazakhstan, Russian Far East, New Guinea, Japan
(Hokkaido, Honshu, Shikoku, Kyushu), North Korea, South Korea, Mongolia, Turkey
(N-Anatolia, NE-Anatolia, NW-Anatolia: Bithynia), Myanmar [Burma], Jammu &
Kashmir (Poonch, Kashmir), Pakistan (Jhelum, Swat, Hazara), India (Tamil Nadu),
Nepal, Sikkim, Philippines, Malesia, Bhutan, Sikkim, Chumbi, Vietnam, China
(Gansu, Heilongjiang, Jilin, Liaoning, Shaanxi, Sichuan, Yunnan), Taiwan, Tibet as per Catalogue of life;

Common names: Wood-sorrel, Irish shamrock, cuckoo-bread

Stemless perennial herb with underground creeping rhizome with scale-like leaf remains; leaves all basalon 4-15 cm long petiole; leaflets 3, up to 3 cm long, 3.5 cm broad, deeply emarginate, with appressed hairs beneath and along margin; flower solitary, nodding, on a peduncle almost as long as leaves, two bracts present midway on peduncle; sepals ovate-lanceolate, persistent; petals white or lilac with purplish veins12-18 mm long, retuse at tip; capsule ovoid, 3-4 mm long.