Impatiens L.

1. Impatiens L. View in CoL 4

Sepals 3, the lowest large, petaloid, saccate, usually spurred, the lateral ones small, ovate, usually green. Upper petal largest, each lateral pair connate except for 2 apical lobes.

1 Leaves opposite or verticillate 4. glandulifera 1 Leaves alternate

2 Flowers yellow or orange

3 Flowers, including spur, not more than 1-8 cm; sepal-sac wider than long; upper leaves usually largest, usually with

20 or more teeth on each side 3. parviflora 3 Flowers, including spur, usually 2 cm or more; sepal-sac longer than wide; upper leaves smaller than lower, usually with 16 or fewer teeth on each side

4 Flowers yellow; sepal-sac gradually contracted to spur; spur usually curved through less than 90° 1. noli-tangere 4 Flowers orange; sepal-sac abruptly contracted to spur; spur bent through 180° 2. capensis 2 Flowers purplish-pink to reddish, occasionally white

5Partial inflorescences exceeding the subtending leaf; capsule

2-4 cm, glabrous 5. balfourii 5Partial inflorescences shorter than the subtending leaf; capsule not more than 1-3 cm, pubescent 6. balsamina