Hedysarum L.

70. Hedysarum L. View in CoL 2

Annual or perennial herbs. Leaves imparipinnate; stipules free or connate. Flowers in axillary racemes. Calyx campanulate, with 5 subequal teeth; corolla pink, purple or violet, rarely white or yellow; stamens diadelphous. Legume lomentaceous, more or less compressed, with up to 8 segments. Seeds 1 in each segment.

1 Annual

2 Leaflets1— 3(—5)pairs,theterminal leaflet15-45x 9 -40mm

2. flexuosum 2 Leaflets(2-)4-8pairs,theterminal leaflet 5 -15 x 2 -5mm

3 Corolla 8-11 mm, 1^-2 times as long as the calyx 3. spinosissimum

3 Corolla 14-20 mm, 2 |- 5 times as long as the calyx 4. glomeratum

1 Perennial

4 Acaulescent, with all the leaves in a basal rosette

5 Calyx about as long as the corolla; legume unarmed 15. candidum

5 Calyx shorter than the corolla; legume with short spines or setae

6 Corolla yellow; calyx about as long as the wings 16. grandifiorum

6 Corolla purple-violet; calyx exceeding the wings 17. biebersteinii

4 Caulescent; plants with leafy and usually branched stems

7 Leaflets glabrous or sparsely hairy beneath; legume glabrous or sparsely pubescent, unarmed

8 Leaflets emarginate; bracts 1-1-5 mm; corolla cream or white, sometimes with bluish veins 7. boutignyanum

8 Leaflets obtuse or acute; corolla reddish-violet

9 Bracts 6-15 mm, longer than the pedicel; segments of legume with a wide membranous margin 5. hedysaroides

9 Bracts 1-5-3 mm, shorter than the pedicel; segments of legume with a very narrow membranous margin

6. alpinum

7 Leaflets pubescent or sericeous beneath; legume pubescent or with spines or setae

10 Legume unarmed

11 Leaflets lanceolate or linear; corolla pale pink or lilac

9. razoumowianum

11 Leaflets oblong, elliptical or obovate; corolla purple or violet

12 Calyx-teeth shorter than tube 10. cretaceum

12 Calyx-teeth as long as or longer than tube 12. tauricum

10 Legume with spines or setae

13 Calyx-teeth about as long as tube; legume glabrous

1. coronarium

13 Calyx-teeth longer than tube; legume pubescent

14 Corolla yellow 14. varium

14 Corolla purple to violet

15 Corolla 15-24 mm 8. gmelinii

15 Corolla 9-14 mm

16 Leaflets elliptical to obovate; calyx 3-3-5 mm

18. macedonicum

16 Leaflets linear to oblong-elliptical; calyx 4-9 mm

17 Spines on legume more than 1 mm 11. ucrainicum

17 Spines on legume not more than 1 mm 13. humile