Euonymus L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 242

1. Euonymus L. 1

Unarmed shrubs or small trees. Leaves usually opposite. Flowers 4- to 5-merous. Capsule 4- to 5-locular, dehiscent; seeds partly or completely covered by a bright orange, fleshy aril. 1 Stems creeping and rooting, with ascending branches; leaves linear to linear-oblong; cymes all 1-flowered 4. nanus 1 Stems never creeping and rooting; leaves lanceolate to broadly obovate; cymes (1—)2- to 12-flowered 2 Evergreen 5. japonicus 2 Deciduous 3 Twigs subterete, covered with dark brown tubercles

3. verrucosus 3 Twigs ± quadrangular, without tubercles 4 Leaves 3-8(-10)cm; buds 2-4 mm, ovoid, acute; flowers usually 4-merous 1. europaeus 4 Leaves (5-)8-16cm; buds 7-12 mm, fusiform, acuminate;

flowers usually 5-merous 2. latifolius