OF SOUTH AUSTRALIA. 
373 
Order CRYPTONEMINAE Schmitz. 
CONSPECTUS OF THE FAMILIES. 
I. — Auxiliary .cells arising from true articulated filaments which have 
arisen by secondary development. Gonimoblasts (fertile nucleus) immersed 
in the fronds. 
Grateloupiaceae. Procarp, filaments of carpogonial cells and of 
auxiliary cells disposed in erect flask-shaped structures. Gonimo- 
blasts divided into many lobes which arise by successive develop- 
ment. Nearly all cells transformed into carpospores. 
Dumontiaceae. Filaments of auxiliary cells arcuate; numerous fila- 
ments intermixed with slightly arcuate carpogonial cells. Goni- 
moblasts imperfect, divided into lobes arising successively. Nearly 
all cells forming carpospores. 
II. — Auxiliary cells are carpogonia evolved in true corticated segments 
of the frond. 
A. — Fertile segments of fronds thick and nematheciose. Auxiliary cells 
numerous, enclosed in articulated filaments. Gonimoblasts congested in 
sori. 
Rhizophyllidaceae. Carpogonia situated in articulated filaments of the 
frond and many abbreviated to terminal cells. Gonimoblasts 
divided into many lobes. Cells nearly all forming carpospores. 
Fronds terete or ancipitous-plane, sometimes encrusted with lime. 
Squamariaceae. Filaments of carpogonial cells abbreviated or lateral. 
Gonimoblasts minute, articulated filaments short, simple or 
branched. Nearly all cells forming carpospores. Fronds dorsi- 
ventral. 
B. — Numerous auxiliary cells situated around the articulated filaments 
of the carpogonial cells or evolved distinctly in articulated filaments of 
the frond, with the carpospores congested in sori. 
Corallinaceae. Auxiliary cells, after fertilization, all uniting in turn. 
Many gonimoblasts formed from the fusion cell (forming short 
chains of carpospores). Fronds ' nearly always encrusted with 
lime. 
Family GRATELOUPIACEAE Schmitz. 
KEY TO THE GENERA. 
a. Sporangia nidulating in the exterior region of the 
cortex. 
b. Fronds terete, angular-complanate or foliaceous. 
Branching variously furcate or lateral, not 
proliferous. Internal stratum filamentous- 
reticulate Ealymenia (Ag.) 
J. Agardh. 
