OF SOUTH AUSTRALIA. 
199 
2. Stipes short (1-J cm.) passing rather abruptly 
into the frond ; frond cartilaginous, dark 
blood-red, simple or sparingly dichotomous, 
15 cm. to 20 cm. long to 3 cm. wide, pinnated 
from the margin ; pinnae variously cleft and 
fimbriate, sometimes multifid, oculeo-dentate or 
ciliate at the margin; discs sprinkled with 
spinous points or lobules and with cystocarps. 
When juvenile the frond consists of a simple 
stalked, smooth circular disc II. conspersa 
(Harv.) J. Ag. 
Western Australia and Victoria, hence 
probably to be found in South Australia. 
In both species the cross-section shows 
unmingled large cells in the medullary 
stratum. Hence Harvey attributed them to 
Rhodymenia and Calliblepharis respectively. 
^ STICTOSPORUM Harvey. 
A genus resembling Rhodophyllis in facies and the presence of zonate 
tetraspores, but differing in the structure of the frond. Inner and cortical 
cells are of the same moderate size, the cortical coloured, monostromatic, 
and the medullary sparingly mingled with longitudinal threads. The 
cystocarps have not been seen. Tetrasporangia are large, more or less 
immersed in the cortical stratum, scattered and visible on the surface under 
a low power lens. 
Stictosporum nitophylloides Han. 
Fronds 15 cm. to 20 cm. high, and as much in the spread, from the base 
divided into many irregularly dichotomous or multifid spreading lacmeae, 
all the axils wide and rounded. Laciniae from \ cm. to 1-J cm. broad, nearly 
linear throughout, with toothed margins and blunt apices. The substance 
is not gelatinous, and the plants do not adhere to the mounting paper. 
Colour rosy-red when fresh. 
Western Australia and South Australia (Eastern Bays). 
The genus should probably be placed under the family Rhodophyllidaceae 
rather than under Rhodymeniaceae, but its position cannot be determined 
until the cystocarps have been found. 
RHODYMENIA Greville. 
Frond flat, membranaceous, dichotomous or palmate, composed of two 
strata of cells, the interior of large, uncoloured oblong cells in a few layers, 
the cortical of minute-coloured cells radiating vertically. Cystocarps 
scattered over the frond, with a hemispherical pericarp. Tetrasporangia 
evolved among the superficial cells, rounded, cruciately divided. Colour 
red. Substance firm, chartaceous. 
