OF SOUTH AUSTRALIA. 
367 
Geramium puberuium Sonder. 
Frond 15 ,cm. to 30 cm. or longer, setaceous, alternately branched; 
lateral ramuli short, the ramelli dichotomous, the terminal ones irregularly 
forcipated, especially on the outer edge, with a row of articulate bristles; 
articulations about three times longer than wide below, upper interstices 
bare. Tetraspores carried singly on the bristly swellings on the outer 
side of the segments. Cystocarps in an involucre of ramelli. 
South Australia (Holdfast Bay, Gulf St. Vincent, Eastern Bays), West 
Australia, Tasmania. 
Geramium miniatum Suhr. 
A primary creeping filament throws up minute, scattered, erect fronds; 
fronds compressed, distichously subbipinnate ; pinnae dichotomous, the 
terminal segments very short, tooth-like ; articulations shorter than their 
diameter. Primary filaments prostrate on the surface of other algae, 
creeping by means of small discs, and throwing up scattered erect fronds. 
Fronds about 1 cm. to 2 cm. long, oblong with flexuous -rachides. Pinnae 
alternate, more or less compound. Articulations coated with cellules round 
the joints, pellucid in the middle, joints of the ramuli very short, with 
narrow band. Apices slightly hooked inwards. Cystocarps in pairs, oval, 
subterminal, subtended by three or four short ramuli. Tetrasporangia very 
prominent, globose, arranged along opposite margins of the ramuli in 
longitudinal rows. Colour bright purple ; adheres to paper. 
West Australia (Swan River), New South Wales (Kiama), Peru. 
Geramium pusillum Harvey. 
Frond short, about 6 cm. to 8 cm. long, irregularly pinnate, ramuli sub- 
distichous, corymbose-fastigiate, the pinnellae alternate and patent, terminal 
segments upright and acute; the articulations are equal or shorter in 
length than they are wide, entirely corticate. Tetrasporangia immersed in 
the cortex, verticillate, many around the nodes, elsewhere sparse. Cysto- 
carps in a slightly prominent involucre of ramelli. 
West Australia, Victoria (Port Fairy, Warrnambool) . 
Geramium, subcartilagineum J. Agardh. 
= Geramium rubrum australe Harvey. 
Frond setaceous, dichotomous, subfastigiate, ramelli lateral, virgate ; 
secondary ramelli elongate, conspicuously thicker at the base, acuminate 
for a long distance ; the nodes placed one above another in a long row, 
very soon confluent in the adult ramelli ; lower articulations about one and 
a half times longer than wide. Tetrasporangia immersed subverticillately 
in the soft nodes of the penultimate ramelli. Substance gelatinous when 
fresh, when dry subcartilaginous ; young plants red, old plants almost 
pink-grey. 
South Australia (Encounter Bay), Tasmania. 
