Key: Step 22. Dendrobium
Dendrobium (from Orchids II).

1a. Stems or pseudobulbs 1-leaved. Inflorescences 1-flowered (possibly in fascicles).

Step 23. 2

1b. Stems or pseudobulbs with two or more leaves, or if one-leaved, inflorescences with at least 2 flowers.

Step 135. Dendrobium (p.p.)
Decision path