Key: Step 632. Orthocladiinae 44

632a. More than five anal macrosetae on each anal lobe.

Step 633. Orthocladiinae 45 Propsilocerus

632b. Three anal macrosetae on each anal lobe. (Frontal setae on frontal apotome. Thoracic horn not bifid or strongly jagged at apex.)

Step 636. Orthocladiinae 48 Hydrobaenus
Decision path