Crotalaria rosenii and two subspecies of Crotalaria agatiflora, 1753

Fonseca-Cortés, Andrés, 2022, Misidentified For More Than 50 Years, Crotalaria Rosenii (Leguminosae, Papilionoideae, Crotalarieae), A Cultivated Species In Colombia And Ecuador, Phytotaxa 533 (5), pp. 287-297 : 294

Key to Crotalaria rosenii and two subspecies of Crotalaria agatiflora cultivated

1. Bracteoles to 3 mm wide, flowers 4.5–5.0 cm long, standard 5.0–5.5 × 4.0– 4.6 cm, standard callosities glabrous, keel apex hooked .................................................................................................................................................................................. C. rosenii

- Bracteoles to 1 mm wide, flowers 3.0– 3.5 cm long, standard 3.5–3.7 × 2–3 cm, standard callosities pubescent, keel apex straight. ............................................................................................................................................................................................................2

2. Bracteoles to 3 mm long, leaves glabrous or puberulous beneath, leaves elliptic-lanceolate, with 9–12 pairs of secondary veins... ............................................................................................................................................................. C. agatiflora subsp. agatiflora

- Bracteoles of 6–10 mm long, leaves pubescent beneath, leaves ovate-elliptic, with 14–17 pairs of secondary veins ........................ .................................................................................................................................................................. C. agatiflora subsp. engleri