Trigonella L.

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 : 150-151

55. Trigonella L. 1

Annual. Leaves pinnately 3-foliolate; leaflets usually toothed. Flowers solitary or in sessile or pedunculate axillary heads or short racemes. Calyx-teeth equal or unequal; corolla yellow, blue or purplish, free from the staminal tube, deciduous; stamens diadelphous or monadelphous; filaments not dilated. Legume usually linear or oblong, straight or curved, indéhiscent or dehiscing along one suture. Seeds 1-many.

Literature: G. Sirjaev, Pubi. Fac. Sci. Univ. Masaryk 102: 1-57 (1928); 110: 1-37 (1929); 128: 1-31 (1930); 136: 1-33 (1931); 148: 1-43 (1932); 170: 1-37 (1933). I. T. Vassilczenko, Acta Inst. Bot. Acad. Sci. URSS 10: 124-269 (1953).

1 Calyx 5-12 mm, tubular 2 Legume 1-2 mm wide, not beaked; seeds smooth; pedicels

c. 2 mm 7. grandiflora 2 Legume 2-5-7 mm wide, beaked; seeds tuberculate; pedicels not

more than 0-5 mm 3 Flowers (3-) 10-15 in pedunculate heads; beak of legume

3-5-5 mm 20. coerulescens 3 Flowers solitary or paired and not pedunculate; beak of

legume 10-40 mm 4 Leaflets 20-50 x 10-15 mm; legume (excluding beak) 60-

110 mm; seeds quadrangular 23. foenum-graecum 4 Leaflets 5-12x3-8 mm; legume (excluding beak) 15-

40 mm; seeds ovoid 5 Corolla 8-10 mm; legume straight; beak 10-20 mm

21. gladiata 5 Corolla c. 18 mm; legume curved; beak 30-40 mm

22. cariensis 1 Calyx 2-5 mm, usually campanulate 6 Legume flat, membranous, with a broad membranous wing on

the suture 7Calyx c. 3 mm; corolla 7-10 mm; legume 12-20x 10-15 mm

1. graeca 7 Calyx c. 2 mm; corolla c. 5 mm; legume 11-14x 8-10 mm

2. eretica 6Legume not membranous and not winged 8 Corolla blue, rarely white; legume 4-5 mm 9 Racemes globose, scarcely elongating after anthesis; legume

abruptly contracted into a beak 18. caerulea 9 Racemes subglobose, elongating after anthesis; legume

gradually attenuate into a beak 19. procumbens 8Corolla yellow, sometimes tinged with purple; legume 5 mm

or more 10 Racemes sessile or subsessile with peduncles less than

0-5 cm

11 Legume glabrous

12 Legume erect or patent 13. arcuata

12 Legume pendent

13 Stems sparsely hairy; calyx-teeth shorter than tube

10. spinosa

13 Stems densely appressed-pubescent; calyx-teeth longer

than tube 17. monspeliaca

11 Legume pubescent at least when young

14 Legume 7-17 mm, pendent 17. monspeliaca

14 Legume (1O-)2O-5Omm, erect or patent

15 Legume 1-5-2 mm wide, with reticulate veins

15. polyceratia

15 Legume 1-1-5 mm wide, with oblique anastomosing veins 16. orthoceras

10 Racemes pedunculate 16 Legume glabrous 17 Calyx-teeth equal 18 Legume pendent; calyx-teeth | as long as tube 3. maritima

18 Legume erect or patent; calyx-teeth slightly longer than tube 12. striata

17 Calyx-teeth unequal 19 Legume 5-8 mm, ovate 11. spicata

19 Legume 10-16 mm, linear or oblong

20 Peduncles c. 1-5 cm, about as long as leaves

6. rechingeri

20 Peduncles 2-6 cm, at least twice as long as leaves

21 Wings shorter than keel; legume acuminate

4. corniculata

21 Wings as long as keel; legume subacute 5. balansae

16 Legume hairy 22 Legume pendent; seeds smooth 23 Stems glabrous; legume with thick, oblique veins

3. maritima

23 Stems villous; legume with indistinct, reticulate veins

8. sprunerana

22 Legume erect or patent; seeds tuberculate or tuberculaterugose, rarely smooth

24 Legume 5-8 mm; flowers in ± elongated racemes

25 Legume contracted between the seeds, pubescent; seeds smooth 9. smymaea

25 Legume not contracted between the seeds, glabrescent; seeds finely tuberculate 11. spicata

24 Legume 10 mm or more; flowers in subumbellate racemes

26 Calyx-teeth shorter than tube; legume 1-5-2 mm wide

15. polyceratia

26 Calyx-teeth about as long as tube; legume 1-1-5 mm wide

27 Corolla 5-7 mm; legume with transverse veins

14. fischerana

27 Corolla 4-5 mm; legume with oblique veins

16. orthoceras