88 
THE SEAWEEDS 
Padina Fraseri (Grev.) J. Agardh. 
Frond subconaceous, fan-shaped, stupose below, above many times split, 
dark-brown but pruinose. Has a spread of 5 to 13 cm. 
Generally around Australia, but not observed in Tasmania. 
SPATHOGLOSSUM Kuetzing. 
Frond erect, flat, ribless, subpalmate-diehotomous. Thallus of 2 strata 
■of cells, the inner of empty angular cells in several layers, the outer of 
cubical cells scarcely smaller but coloured. Oogonia scattered singly or in 
pairs over the frond; anthendia in sori on different individuals: tetraspores 
unknown. 
Spathoglossum cornigerum J. Agardh. 
Much resembling Haliseris Muelleri, but ribless and with squared apices 
and conspicuously rounded sinuses. To 60 cm., much branched. 
New South Wales. 
Spathoglossum grandifolium J. Agardh. 
Frond sparingly dichotomous. Taller than the preceding and stouter 
Port Phillip Heads. 
Fig. 49.— (a) Hails eris Muelleri ; (b) and (c) H. polypodioides ; 
(b) scattered spores; (c) sorus of spores. 
