Tetragonolobus purpureus, Moench

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 177

3. T. purpureus Moench , Meth. 164 (1794)

( Lotus tetragonolobus L. ).

Pubescent annual 10-40 cm. Leaflets up to 40 x 25 mm, obovate or obovate-rhombic; stipules ovate, more or less acute. Peduncles shorter than or equalling leaves. Flowers solitary or paired. Calyx-teeth 1-2 times as long as tube; corolla 15-22 mm, crimson; style not winged at the tip. Legume 30-90x6-8 mm, glabrous; wings 2-4 mm wide. S. Europe, extending northwards to c. 41°N. in Ukraine. BI Cr *Ga G r Hs It Rs (W, K.) Sa Si [Cz Lu]. T. wiedemannii Boiss. , FI. Or. 2:176 (1872) ( Lotus wiedemannii (Boiss.) Nyman ) is an imperfectly known species from the Aegean region (Paros). It is like 3 but with leaflets c. 4 mm, emarginate (not acute to obtuse); stipules very shortly stalked (not sessile); corolla c. 10m m; and calyx-teeth obtuse (not acute), shorter than the tube.