7 
FOSSIL PLANTS FROM THE TALBRAGAR BEDS. 
(a) Descriptions of the Specimens. 
FI LIC ALES. 
Osmundacecc {?). 
Cladophlebis australis (Morris). 
(Plate II, figs. 5, 6.) 
[For synonymy see Seward (04a), p. 171, and Walkom (17), p. 3.] 
The specimen figured on Plate II, fig 5, represents the apical portion 
of a small frond of Cladophlebis australis. Such specimens are very sparsely 
represented in the collection, but there is little difficulty in identifying this 
type of frond. Considering that Cladophlebis australis is such a common 
type in the Jurassic flora as known from other Australian occurrences, it is 
rather remarkable that it is not more abundant in the Talbragar collection. 
The specimen figured (F3144) serves as a record of the species from 
the locality. 
Cyatheaeecc. 
CoNIOPTERIS HYMENOPHYLLOIDES (Bl'Ongn. ). 
(Plate I, figs. 3-6.) 
This species was first described by Brongniart in 1829. It is of world- 
wide occurrence in Jurassic rocks. For full synonymy reference may be made 
to Seward (04 a), p. 163, and Arber (17), p. 32. 
Seward’s definition of the species is : “ Frond tripinnate ; pinnae linear 
acuminate, attached to the rachis at a wide angle ; the pinnules vary consider- 
ably in size and shape, in some forms they have a few broad and rounded lobes, 
and in others the lamina is deeply dissected into narrow linear segments. The 
fertile pinnules bear the sori at the end of the veins ; the lamina is usually 
much reduced, and in extreme cases the fertile segments agree closely with 
those of Thyrsopteris elegans, Kze., or Dicksonia Bertevana, Hook. The sori 
are partly enclosed in a cup-shaped indusium ; the sporangia appear to have 
an oblique annulus of the cyatheaceous type. The two lowest pinnules of 
the pinna are often characterised by their unusual shape, the lower half of 
each pinnule consisting of long spreading and irregular aphlebia- like lobes 
Venation and form of the frond of the Sphenopteris type. 1 
1 Seward (04a), p. 163. 
