| | 1. Style in fruit 20–35 mm, plumose, not hooked; flowers 1–3, nodding, ± cup-shaped; petals cream or tinged pink, persistent; bractlets 5–14 mm |
| G. triflorum |
| | 1' Style in fruit 4–10 mm, not plumose, hooked; flowers generally 3–10, erect, rotate; petals yellow, deciduous; bractlets < 3 mm |
| |
| | 2. Terminal leaflet of basal leaf generally lobed nearly to base; plant drying blackish green; head in fruit (including styles) ± 15 mm wide, pedicel 1–1.5 mm diam; petals ± ovate; uncommon |
| G. aleppicum |
| | 2' Terminal leaflet of basal leaf lobed < 3/4 to base; plant drying greenish; head in fruit (including styles) generally 10–15 mm diam, pedicel ± 0.8 mm diam; petals obovate-round; common |
| G. macrophyllum
|