Plants small. Stems sparsely and irregularly pinnate. Stem leaves falcate-secund, ovate or broadly ovate, gradually narrowed to apex, ± strongly concave, 1.1-2.1 × 0.5-0.7 mm; base erect or erectopatent, insertion slightly curved; margins entire or very weakly and obtusely denticulate; apex acuminate, acumen gradually differentiated, furrowed; costa single, ending just below mid leaf to 4/5 leaf length; alar region transversely triangular, transversely short-rectangular, or quadrate, reaching from margin 33-66% distance to costa; ratio of medial laminal cell length (µm) to leaf length (mm) 37.6-45.6. Sexual condition dioicous.
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