Sori of Orthiopteris seen from abaxial side. a, bOrthiopteris campylura var. campylura (Cuming 119, MICH) cO. campylura var. kingii (Brass 12941, MICH) d O. trichophylla (Brass 12239, L) e Orthiopteris tenuis (Smith 9154, L) f Orthiopteris tenuis (Smith 7274, L) gO. campylura var. caudata (Carr 12518, L) h O. cicutarioides (Carr 13257, K) i, jO. campylura var. insularis (Braithwaite 4110, L) k O. tenuis (small segment) (Degener 14648, L) l O. ferulacea (Smith 8932, K) m, n O. firma (Schlechter 14890, L) o, pO. campylura var. laxa (Mueller s.n., L) q, r O. henriettae (Lam & Meeuse 5892, L) s O. henriettae. t O. samoensis (Reinecke 97a, L) u, v O. samoensis (Vaupel 312, L). All scale bars 1 mm, oi = outer indusium, ii = inner indusium.