350 
THE SEAWEEDS 
Ballia callitricha (Ag.) Montagne. 
Attachment a spongiose disc. Frond sometimes small, sometimes up to 
25 cm. long, distichous, irregularly pinnate ; pinnae and pinnulae opposite, 
regular, lanceolate, the lower ones simple and acute; pinnae articulate 
below, attached to the rachis and de, current, then branching; ramuli 
fertile, conspicuously irregular. Colour reddish-purple, darker when dry. 
South Australia (Encounter Bay, Investigator Strait, Eastern Bays), 
West Australia, Tasmania, New Zealand. 
Fig. 174 . — Baillia callitricha: Two plants. 
Ballia Mariana Harvey. 
Penultimate branches incurved, tristichous, all but one very short and 
irregularly multifid or pinnate; the long branch closely pinnated with 
tristichous plumules ; these plumellae patent, pinnate, with excurrent 
rachis; the ultimate ramuli slender, cylindrical, obtuse, opposite or often 
secund. 
Attachment or holdfast a .conical mass of woolly fibres. Fronds solitary, 
14 cm. to 20 cm. long or more, distichously branched ; principal branches 
irregular, alternate or scattered. Branches pinnated throughout with 
minute and larger plumose ramuli, which are alternately inserted along 
each rachis. Two to four or six of these plumules, placed approximately 
opposite at intervals of about 1J cm., are branch-like, 1 cm. to 3 cm. long 
