1	"Capsule opening circumsciss; flowers pink, reddish or blue"	2
1	"Capsule opening via vertical slits; petals yellow or minute and hyaline"	3
2	"Leaves opposite; petals brilliant vermilion, purple, or blue, longer than sepals; stems usually longer than 15 cm"	"Lysimachia arvensis"
2	"Leaves alternate; petals white to pink, shorter than sepals; stems no more than 10 cm long"	"Lysimachia minima"
3	"Diminutive annual; leaves linear, c. 1 cm long; stems prominently 4-angled or winged; petals hyaline, shorter than calyx"	"Lysimachia linum-stellatum"
3	"Perennial; leaves lanceolate to broad-ovate; stems not or hardly angled; petals yellow, conspicuous and exceeding calyx"	4
4	"Leaves subsessile, lanceolate, 4 cm long or more; plants erect"	"Lysimachia vulgaris"
4	"Leaves petiolate, broadly ovate or orbicular, to 3.5 cm long; plants prostrate or procumbent, rooting at lower nodes"	5
5	"Leaves with scattered hairs, up to 1.5 cm long; corolla barely exceeding calyx"	"Lysimachia japonica"
5	"Leaves lacking hairs, 1–3.5 cm long; corolla distinctly exceeding calyx"	"Lysimachia nummularia"