OF SOUTH AUSTRALIA. 
69 
Scytothalia, dor year pa (Turn.) Greville. 
Attachment a flat disc, throwing out lateral branching fibres. Fronds 
30 to 90 cm. high, linear, flat, coriaceous, distichous and alternately decom- 
pound, nowhere distinctly midribbed. The ultimate pinnules or laciniae 
are 7 to 14 cm. long, flat, linear-falcate, tapering at the point. There are 
Fig. 41 . — Seirococcus axillaris. Fig. 42 . — Scytothalia dorycarpa. 
no vesicles. The receptacles form series springing from the margin of the 
secondary and tertiary branches, flattened, generally ovate beaked; they 
are densely covered on both surfaces with tubercles, pierced with a pore, 
covering the conceptacles. The conceptacles contain antheridia, oospores 
and paranemata. The oospores are ovate with a wide transparent 
perisperm. The colour is a greenish-olive, darkening when dried The 
substance is leathery; when steeped in fresh water the plant exudes a 
slimy mucus. 
