OF SOUTH AUSTRALIA. 
257 
ones' obovate. Cystocarps sessile at the apices of the ramelli. Tetra- 
sporangia on the upper parts of the shortly vesiculose lateral ramelli. 
Colour purplish, adheres firmly to paper. 
South Australia (Holdfast Bay, Encounter Bay, Investigator Strait, 
Eastern Bays) West and South Coasts generally, common. 
Ccdoclonium mcrassatum J. Agardh. 
Frond continuously branching outwards, elongate, irregularly pinnate; 
stem and principal ramuli thick attenuated, obtuse; ramuli spreading in 
all directions, singly or soon dividing; lesser branches whorled round the 
principal ones in fascicles, subeollaterallv ; ramelli subclavate. Cystocarps 
sessile, arranged along the ramuli, urceolate, globose, prominent above the 
ramelli. Tetrasporangia mostly on the upper part of the ramelli. Sub- 
stance firm, gelatinous, adheres to paper. This species hardly differs from 
C. verticiUata. 
South Australia (Eastern Bays) and Tasmania. 
DOLICHOSCELIS J. Agardh. 
Fronds stipitate, terete, or almost terete, with ramuli branching* in every 
direction, subdistichous, or corymbose, abundant ; central axis surrounded 
by many irregular cellules, the outer layer of cells angularly rounded, 
arranged in a few rows. Tetrasporangia forming a circle a little below the 
apices, triangularly divided. 
Dolickoscelis clavifera J. Agardh. 
Fronds terete, filiform, ramuli branching, more or less decomposite, 
adult ramuli almost cylindrical, filiform ; branching into similar dispersed 
ramelli ; some simple, subclavate, some more decomposite ; subverticillate. 
Tetrasporangia forming a circle a little below the apices, triangularly 
divided. 
South Australia (Spencer Gulf, Encounter Bay), Tasmania. 
Dolickoscelis disticha J. Agardh. 
Frond subterete, stem bare below, above with ramelli branching from 
near the margin, subdistichous; the upper ones simple, sublanceolate, 
obtuse ; lower ones irregular, sending out another row of ramelli. 
South Australia (Port Elliot). 
Dolickoscelis gracilipes J. Agardh. 
Frond terete both above and below, broad, spreading; ramuli ovate, 
visibly ribbed ; upper part terete, with filiform ramuli branching, forming 
fertile terminal corymbs. Cystocarps singly below the apices of the ramelli, - 
obovate, globose, subpedicillate. 
^ 50 uth Australia (Port Elliot). 
CHONDRIA Agardh. 
Frond slightly terete, compressed, irregular ; branches virgate, con- 
stricted at the base, polysiphonous in the cortex, five cellules placed at 
equal distances, circling the axis, with smaller cellules in the cortex. Cysto- 
carps at the junction of the upper ramelli. Tetrasporangia developed in 
