Ultimate segments. Arrows show distance from base of the shallowest sinuses to nearest costule/vein. a Orthiopteris ferulacea, Smith 8932 (K) b O. cicutarioides, Carr 13257 (K) c O. samoensis, Reinecke 97a (L) d O. trichophylla, Brass 12239 (L) eO. campylura var. cautada, Carr 12518 (L) fO. campylura var. laxa Mueller s.n. (L) gO. campylura var. kingii, Brass 12941 (MICH) h O. henriettae, Lam & Meeuse 5892 (L) iO. campylura var. insularis Braithwaite 4110 (L). All scale bars 1 mm.

 
 
  Part of: Luong TT, Hovenkamp PH, Sosef MSM (2015) Revision of the fern genus Orthiopteris (Saccolomataceae) in Malesia and adjacent regions. PhytoKeys 53: 39-71. https://doi.org/10.3897/phytokeys.53.4955