OF SOUTH AUSTRALIA. 
391 
Melobesia farinosa Lamouroux. 
Frond flat, affixed below, suborbicular, rimose, somewhat scaly, imbri- 
cated, quickly confluent, farinose; conceptacles covering the whole frond, 
hemispherical, abundant, very minute. 
South Australia (Investigator Strait), Victoria (Port Phillip), Atlantic, 
Mediterranean. 
Melobesia cymodocea Foslie. 
Frond crusted or spotted greyish-red, at first orbicular, then confluent and 
irregular, monostromatic (except near the conceptacles). Conceptacles of 
the sporangia solitary or in groups, conical. 
Victoria (Port Phillip). 
Melobesia coronata Rosan. 
Frond orbicular, reniform, slightly lobate, greyish-pink. Conceptacles 
(of the carpospores ?) one to nine in each layer, often arranged in a circle, 
conical, with the tufa coronated with strong elongated hairs. On Poll ex- 
fenia pedicellata. 
South Coast of Australia. 
MASTOPHORA Decaisne. 
Frond thinly calcareous, never fragile, but flexible and tenacious, affixed 
below, terete, caulescent ; above flat and foliacious, flabelliform, dichotomous 
or proliferous, composed of subisomorphic cells, subcubical, radiating. 
Conceptacles scattered over the middle of the frond, hemispherical, monili- 
form, furnished with an apical pore. Sporangia erect in the bottom of 
the conceptacles, oblong, including four zonate spores. 
Mastophora Lamoiirouxii Decaisne. 
Attachment a large callous disc. Frond 10 cm. to 15 cm. long, the stipe 
linear, irregularly dichotomous; ramuli merging into the segments at the 
base, which are narrowly cuneate and incised and vanish into the flabellate 
apices, which have involute margins and are hoary (pruinose) underneath. 
Conceptacles numerous. Colour purplish, often greenish. 
South Australia (Encounter Bay, Investigator Strait), Victoria (Port 
Phillip), South Africa, Java. 
Mastophora canalicvlata Harvey. 
Frond 10 cm. to 20 cm. or longer, narrowly linear, dichotomous-multifid, 
fastigiate, the laciniae linear," or subcanaliculate, margin involute, canali- 
culate underneath, glabrous, concolorous. Conceptacles grouped thickly 
below the apices, hemispherical. Colour purplish-brown when dry. Sub- 
stance calcareous, but flexible ; rigid when dry. 
South Australia (Eastern Bays), Victoria (Port Fairy), Tasmania. 
