OF SOUTH AUSTRALIA. 
205 
BINDERELLA Schmitz. 
Harvey confused two plants in describing and figuring Bindera splacfa 
noides. The second plant served Schmitz for the establishment of a new 
genus, which he named Binder ella. It differs from Bindera in structure; 
within is a medullary fascicle of longitudinal threads ; outside this are large 
cells as in Bindera ; outside these again smaller cells occur in the angles 
between the large cells. Hence a surface view under the microscope shows 
the large cells surrounded by a ring of small cells, giving the rosulate appear- 
ance of a similar view, characteristic of RhodophyUis. The cystocarps are 
prominent, scattered on both faces of the frond. Tetrasporangia have not 
been observed. The position of Binderella cannot be certain until the tetra- 
spores are found. Schmitz placed it among Gelidiaceae. 
The plant has had a curious fate. Harvey confounded it with Bindera. 
J. Agardh described it twice, first as Amphiplexia hymenocladioides from 
plants collected by Wilson at Port Phillip Heads, and secondly as Champia 
circumcincta from plants collected by Miss Hussey from Port Elliot. 
The genus contains only the one species, Binderella neglect a Schmitz. 
Erect fronds cylindrical or somewhat compressed gelatinous, oppositely 
pinnate, tubulose, the tube divided by cross-cellular dissepiments, the septa 
sometimes connected sparingly by threads running through the contents of 
the tube from one to another. The tube is enclosed by a peripheric stratum 
of rounded-angular cells, the inner ones larger. Cystocarps ovate on the 
branches. Tetrasporangia evolved in infra-cortical cells, aggregated, large, 
spherical, triangularly divided. A genus of wide distribution with six Aus- 
tralian species, of which four have been found in South Australia. 
A. — Fronds cylindrical, scarcely compressed. 
1. Dwarf, 3 cm. to 7 cm. long, much less than 
1 mm. wide, in globose bushes, the branches 
Fig. 69 . — Binderella neglecta : Section 
through a cystocarp. 
CHAMPIA Desvaux. 
