314 
THE SEAWEEDS 
Dasya villosa Harvey. 
Frond 30 cm. to 60 cm. long, excessively branched and bushy, many times 
divided, alternately. Branches crowded. All parts of the frond, except 
the older portions of the stem, are densely clothed with exceedingly slender 
quadrifarious articulated dichotomous filaments or ramelli. These are 
either whorled or pencilled, but though crowded are irregularly scattered 
over the surface ; they are 4 mm. to 8 mm. long, repeatedly but distantly 
dichotomous, with acute axils and joints four or five times longer than 
broad. The colour is a dark vinous red, becoming brownish in drying. 
Cystocarps springing from the stem, on thick inarticulate pedicels, urn- 
shaped, with a slender protruding mouth. Stichidia borne on the ramelli, 
oblong, more or less acute or mucronate, but not attenuate. 
South Australia (Encounter Bay, Investigator Strait, Eastern Bays), 
West Australia, Tasmania. 
Figf. 150 . — Dasya villosa. Fig. 151 .— -Dasya ceramioides. 
Dasya urceolata Harvey. 
Fronds 4-5 cm. long, in Tasmania up to 15 cm. ; terete, widely pinnately 
branched, wholly corticate, stem and longer ramuli naked below, above ■ 
subpenicillate, branched ; ramelli fasciculate, issuing from the cortex, 
monosiphonous at the base, below acutely dichotomous, becoming simple 
elongate, rather attenuated, obtuse, bearing stichidia at the apices. Stichidia 
pedicellate, sublanceolate. Cystocarps born in the short penieillate 
branches, ovate, urceolate. 
Victoria (Port Fairy), Tasmania. 
Dasya ceramioides Harvey. 
Frond 20 cm. or more long, about 1 mm. in diameter below, gradually 
attenuated, several times irregularly pinnated. Branches flexuous, not 
distinctly jointed, but somewhat constricted at intervals of four or five 
diameters, triply pinnate; the pinnulae more evidently articulated, the 
articulation swelling upwards. Ramelli simple, erecto-patent, contracted 
