Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
1 Flowers yellow to cream or bronze; stamens 20-75.
..2 Sepal horns 6-10 (-15) mm long; flower buds 15-22 mm long; capsules 35-50 mm long
....3 Sepal horns 3-5 mm long; capsule with surface not obscured by widely spaced prickles 6-8 (-10) mm long
....3 Sepal horns 4-6 (-10) mm long; capsule with surface partly obscured by combination of widely spaced prickles 6-8 (-10) mm long and more numerous shorter and unequal prickles.