BY THE REV. J. E. TENISON-WOODS, F.G.S., F.L.S. 129 



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hich are Khaetic. Also in the lower Lias with Ammonites angu- 

 latus near Coburg, &c. It is a fern of almost infinite variability, 

 as no two specimens are found to correspond in the shape or 

 dimensions of the leaves. Schenck, in his classical work on the fossil 

 plants of the beds intervening between the Keuper and the Lias, 

 gives numerous details on this interesting plant and proves by a 

 multitude of examples from all the known localities where it 

 occurs, that there is but one species. The most extreme forms 

 graduate insensibly from one to another. So far, it had only been 

 found in one place in Australia, but I found some fine specimens 

 on the Darling Downs, near Toowoomba, associated with a peculiar 

 coal floi^a. They are figured on pi. 9, fig. 4. 



Sageno'pteris tasmanica. Feistmantel (1. c, p. Ill, pi. 15, fig. 10). 

 — Frond compound digitate (?), with linear lobes attenuate at the 

 apex ; costa distinct and rounded, veins emerging at an acute angle, 

 forked, and once (so it seems in the fragments) anastomosing. 



This somewhat doubtful species has a resemblance to S. phillipsi, 

 Lindley and Hutton, of the English Oolite, Jerusalem basin, 

 Tasmania. 



Gleicheniace^e. 



Sori subrotund, disposed in the under side of the leaflets, often 

 radiate, in series or immersed in a hemispherical pit, 3 or 6 

 capsular on the dorsal surface or apex of the veins, or placed in a 

 minute raised punctiform receptacle. Capsules sessile, with 

 an oblique excentric ring, splitting longitudinally. Spores, 

 spherically tetrahedral. Fronds dichotomous, rarely simple, 

 pinnate, smooth, pilose, or with a colored powder. 



Gleichenia, Swartz. 

 Veins pinnate, simple or rarely dichotomous, ending in an obtuse 

 apex. Capsules (where there are four) decussately disposed, sessile, 

 coherent, immersed. Frond dichotomous, branches bi-pinnate, 

 pinnules small, coriaceous. 



Living species inhabiting Australia and the Cape. They are found 

 fossil in the Oolite and Cretaceous beds in India and Europe. 

 G. bindrabunensis of India, is extremely common in the Oolitic 

 i 



