102 
THE SEAWEEDS 
CORYNOPHLOEA Kuetzing. 
1 rond subglobose, constituted of a shortened axis and peripheric 
radiating threads. The axis of cylindro-obiong roughly parallel compacted 
longitudinal cells. The peripheric threads, emerging from rounded cells of 
the axis, elongated, beaded, serving the purposes of assimilation, and some, 
transformed into pluri] ocular sporangia. Unilocular sporangia obovate- 
oblong at the base of the peripheric threads. 
Corynophloea eystophorae J. Agardh. 
Greenish-yellow globules of the size of a pea, epiphytic on the branches 
of Cystophora. 
South Australia (Encounter Bay). 
LEATHESIA Gray. 
Thallus growing eentrifugally, at first globose and solid, later irregularly 
lobed and hollow, fleshy gelatinous, composed of an inner short axis of 
oblong cells radiating into decompound forked threads, and peripheric 
threads proceeding from the smaller outer cells of the axis, immersed in 
mucus, and with club-shaped apices. Pluril.ocu.lar sporangia ellipsoid or 
pear-shaped, unilocular sporangia filiform, jointed, of one column of locelli, 
both at the base of the peripheric threads. 
Leathesia difformis (L.) Areschoug. 
Metallic green, shining, irregularly globose, hollow sacs of varying size 
up to 5 cm. in diameter, scattered over rocks exposed at low water. 
South coast of Australia, Tasmania. 
It is doubtful if our Australian plants conform with the Linnean species 
which, however, is of wide distribution, in the North Atlantic of both 
Europe and America, in the Pacific, in Japan, and doubtfully the same at 
the Cape of Good Hope. It is a striking green colour. 
Family ENCOELIACEAE. 
An assemblage of remarkably diverse forms, filamentous, laminate, 
frondose, club-shaped, intestinal, saccate, tubular or hollow or retiform, 
but all of parenchymatous structure and intercalary growth with no 
definite growing point. They reproduce from unilocular and plurilocular 
sporangia arising by the differentiation of a superficial cell or of an out- 
growth from one. 
PUNCTARIA Grevflle. 
Thallus leaf -like, unbranched, stipitate, of 4 to 7 cellular strata, with a 
pile of hairs. Unilocular sporangia scattered, plurilocular sporangia col- 
lected in spots, shortly prismatic, papillose at the apex, with several series 
of locelli in the column. 
