1. Fruit (0.7-) 1-1.4 (-1.8) cm long, on pedicels less than 4 mm long, even when young closely appressed to axis of inflorescence; seeds 10-20 per fruit.

S. officinale

1. Fruit (2-) 3-8 (-10) cm long, on pedicels at least 6 mm long, spreading; seeds 40-120 per fruit.

2. Fruiting pedicel as thick as fruit; uppermost leaves pinnatisect into narrowly linear to filiform lobes to 2 mm wide.

S. altissimum

2. Fruiting pedicel narrower than fruit; uppermost leaves entire or pinnately lobed but with wider segments.

3. Petals 2-3.5 (-5) mm long; flowers and buds overtopped by ends of uppermost young fruit.

S. irio

3. Petals 6-8 mm long; flowers and buds barely if at all surpassed by tips of fruit.

S. loeselii