O. corniculata L., Sp. Pl 435 (1753). Ic: Reichb., Ic. Fl. Germ. 5: t. 199 (1841).
Annual or perennating herb. Stems numerous, procumbent, tomentose-pilose. Leaflets ± obcordate, deeply notched. Stipules prominent. Flowers 1-many in axillary umbels. Sepals lanceolate, ± obtuse, 3-5 mm. Petals pale yellow, 6-8(-10) mm. Pedicels deflexed in fruit. Capsule oblong-cylindric, densely pubescent. Fl. 3-8. Open places, s.l.-1000 m.
Described from Italy and Sicily (Hb. Linn. 600/31!).
A2(E) Istanbul: Istanbul, Sibthorp. A2(A) Istanbul: Anadolihisari, Demiriz 4353! A3 Zonguldak: Akçakoca, Kühne 128! A4 Zonguldak: d. Bartin, Asmara, S.l., Khan et al. 784! A5 Sinop: Sinop, 15 m, Tobey 88! A6 Ordu: Bakacak, Hand.-Mazz. A7 Trabzon: Trabzon, Hand.-Mazz. A8 Çoruh: Borçka to Hopa, 200 m, D. 29831! C2 Muğla: Muğla to Fethiye, 300 m, Dudley, D. 35167! C3 Antalya: Antalya, 9 iv 1936, Tengwall! C5 Seyhan: Toprakkale, s.l, Coode & Jones 664! C6 Hatay: Alexandrette (Iskenderun), Sint. 1888:53! Urfa: Birecik to Rum Kala'a (Halfeti), Sint. 1888: 486!
Cosmopolitan weed.