Key: Step 710. Orthocladiinae 122 Tvetenia

710a. Pearl row consisting of a band of very small pointed tubercles (053c.jpg). Exuviae colourless. 053-1.jpg species overview

Tvetenia bavarica

710b. Pearl row consisting of a single row of tubercles.

Step 711. Orthocladiinae 123 Tvetenia
Decision path