Caption: A-B . Psilotum . A , P. complanatum , habit and enlargements showing flattened aerial shoot and sporogenous leaves with synangium (cult. Adelaide Botanic Garden). B , P. nudum , habit with cross-section of aerial shoot (top left) (R.Hill 1121, AD). C-I , Tmesipteris , with habit of each species and enlargement showing sporogenous leaves with synangium. C , T. ovata (R.J.Chinnock P627, AD). D , T. parva (R.J.Chinnock P668, AD). E , T. lanceolata (R.J.Chinnock P530, based on New Zealand material). F , T. obliqua (R.J.Chinnock P946, AD). G , T. truncata (R.J.Chinnock 8280, AD). H-I , T. elongata . H , habit of large spore-bearing plant; I , small sterile plant (H-I , R.J.Chinnock P886, AD).Illustrators: G.R.M.Dashorst.
Flora of Australia Volume 48 (1998) figure 39.