338 
THE SEAWEEDS 
Subfamily Ptiloteae Cramer. 
CONSPECTUS OF THE GENERA. 
A. — Apical cell obliquely articulate. 
Euptilota Kiitz. Fronds coated with rhizoids or truly corticated. 
Cystocarps terminal on short pinnules. 
Rko'docallis Kiitz. Fronds truly corticated. Cystocarps terminal on 
primary branches of the frond. 
B. — Apical cell transversely (horizontally) articulate. 
Ptilota Ag. Fronds truly corticate. Cystocarps terminal on fertile 
ramuli. 
EUPTILOTA Kiitzing. 
Frond compressed or two-edged, distichous, pectinato-pinnate, inarticu- 
late, with an articulate monosiphonous axis ; the pinnules sometimes 
articulate. Cystocarps involucrate, containing numerous angular spores. 
Tetrasporangia attached to the pinnules, sessile or stalked, solitary or 
glomerulate, tripartite. 
Fig. 164 . — Euptilota articulata. Fig. 165 . — Euptilota coralloidea. 
Euptilota articulata (J. Ag.) Schmitz. 
Frond irregularly pinnate, pinnae alternate on the ancipitous rachis, 
pinnellae regular below, with a cellular cortex, their upper parts, as well as 
the secondary pinnellae, simple articulate ; articulations ecorticate ; the 
secondary pinnellae bearing tetraspores are no different in form from the 
sterile ones. Tetrasporangia borne sparsely at the apices of the pinnellae. 
Cystocarps developed on the lower regular pinnellae, projecting a little 
above the pinnae, involucrate on the numerous converging pinnellae. 
South Australia (Encounter Bay, Eastern Bays), West Australia, 
Tasmania. 
Euptilota coralloidea (J. Ag.) Kiitzing. 
Ptilota coralloidea J. Agardh. 
Frond 10 cm. high, irregularly pinnate, pinnae alternate on the anci- 
pitous rachis, pinnellae corticate almost to the apices, linear, attenuated, 
