), hairy; leaves two to four instances pinnately compound, glabrous or hairy; sori generally marginal or submarginal, discrete or inside of a roughly uninterrupted line, the indusium cup-shaped or lateral and elongate, often also Using the segment margin reflexed; sporangia Along with the annulus vertical; spores largely trilete (tetrahedral-globose); about https://holdenowdkp.signalwiki.com/1688083/balloon_arch_frame_no_further_a_mystery