38 
THE SEAWEEDS 
Caulerpa longifolia C. Agardh. 
Surculus slender and smooth. Fronds from 10 to 20 cm. high, naked 
below, above bearing long simple ramenta in a graceful pencil. The rachis 
angular with ridges and furrows. The ramenta 2.5 cm. long, dark green. 
Distribution.— South Australia: Encounter Bay. Victoria: Warmam- 
bool and Port Phillip Heads. Tasmania. 
Fig. 19 . — Cwulerpa obscura. 
Caulerpa obscura Bonder. 
Surculus very stout, thick as a penholder, covered with short, stiff forked 
scales. Fronds 15 to 80 cm. high, bearing scales at the base which 
gradually pass into crowded pinnate ramenta arranged spirally and not in 
vertical rows. The rachis rounded or somewhat angular, pale green.. The 
ramenta about 2.5 cm. long, setaceous, pinnate, with slender linear pinnae, 
6 to 8 mm. long, dark green. 
Distribution. — Western Australia: Rottnest I., Cottesloe, King Georges 
Sound. South Australia : Port Adelaide, Encounter Bay, and Macdonnell 
Bay. Victoria: Port Fairy, Port Phillip, Port Phillip Heads, Western 
Port. Tasmania. 
