Trichomanes elongatum A.Cunn.
T. polyodon Col. in T.N.Z.I. 28, 1896, 618.
Selenodesmium elongatum (A. Cunn.) Cop. loc. cit. 67, 1938, 82.
Type locality: "Dark ravines in the forests of Wangaroa &c." Type: R. Cunningham, 1834, BM. Also in Australia.
Rhizome stout, forming a short stock densely beset with long dark brown hairs; stipites clustered. Stipes stout, 7-20 cm. long or more, ± bristly-hairy when young, bearing a basal tuft of linear bristly hairs, not winged. Rhachis stout, 10-15 cm. long, with scattered hairs, obscurely winged in upper part. Lamina 7-20 cm. long, 6-10 cm. wide, deltoid-triangular, 2-3-pinnate, dark green; final segs oblong, 1-2 mm. long, toothed to incised. Sori us. ∞, in sinuses of lobes of pinnules, free. Indusium up to 2 mm. long, funnel-form, sessile to shortly stalked; mouth entire or very slightly 2-lipped, hardly dilated. Receptacle stout, far exserted, up to 15 mm. or more long.
DIST.: N., S. Lowland forest from lat. 35º to 44º. Rather uncommon south of East Cape.
Colenso's T. polyodon from "Country between lower Waikato (N.), head of Thames, and Kaipara" (Type: W, Colenso) is a rather small form with stout prominent excurrent veins.