Trigonella coerulescens (M. Bieb., 1819) Halacsy, 1900

Erdoğan, Eyüp, Selvi, Selami & Tümen, Gülendam, 2017, Trigonella coerulescens subsp. ayvalikensis (Fabaceae), a new taxon from Balιkesir, western Anatolia, Phytotaxa 319 (2), pp. 167-174 : 168

Key to the three subspecies of Trigonella coerulescens in Turkey

1. Bracts 3–6 mm long, calyx 6–9 mm long, teeth subulate, leaflets obovate–cuneate and densely villous, seeds ovoid–oblong.......2

1. Bracts 2.0– 2.5 mm long, calyx 5 mm long, teeth linear, leaflets obovate and densely tomentose, seeds ovate.................................. ....................................................................................................................................................... T. coerulescens subsp. kemerensis

2. Bracts 4–6×2.0– 2.5 mm, calyx 7–9 mm, Inflorescence 6–15 flowered, peduncle 15–65 mm long and densely hirsute, stipules 6–7 mm long...................................................................................................................................... T. coerulescens subsp. coerulescens

2. Bracts 3–5×0.5–1.0 mm, calyx 6–7 mm, Inflorescence 15–25 flowered, peduncle 6–30 mm long and densely tomentose, stipules 3–6 mm long................................................................................................................................ T. coerulescens subsp. ayvalikensis