1 Selliguea murudensis can be confused with S. brooksii and S. pseudoacrostichum. It differs from S. brooksii in its usually smaller, slenderer stature, the lamina base usually more narrowly cuneate, lamina surfaces not distinctly glandular (inconspicuous glands may be present), with conspicuous hydathodes always at least a few present. From S. pseudoacrostichum it differs in mostly shorter internodes, narrower fertile fronds and continuous or nearly continuous coenosori. 2. The coenosori are occasionally interrupted.