Key: Step 703. Orthocladiinae 115

703a. Pearl row absent. (Anal lobes usually without a 4th apical seta.)

Step 704. Orthocladiinae 116 Eukiefferiella

703b. Pearl row present. (Anal lobes with an additional 4th seta internally, well-separated from the other three.)

Step 710. Orthocladiinae 122 Tvetenia
Decision path