382 
THE SEAWEEDS 
very densely; the fully developed ramuli almost wholly covered at the 
base and plane phyllodia bearing cystocarps rising densely from the plane 
suface ; those bearing tetrasporangia terminal ; subsessile, pinnately 
laciniate. 
South Australia (Gulf St. Vincent), West Australia. 
Thamnoclonium Lemannianvm Harvey. 
Frond dendroid, the stem cylindrical, branches winged below, expanding 
upwards into flat, strongly midribbed phyllodia, at length proliferously 
Fig. 192 . — Thamnoclonium cla , 'iferum: a, o’ant; b, 
apex of branch, with two terminal spore- 
leaf clusters; c, section through a 
ramulus; d, cellular tissue of same; e, 
section through a spore-leaf; f , tetra- 
spores. (After Harvey.) 
much branched ; phyllodia linear-cuniform, sinuoso-pinnatifid, covered with 
muricated warts and traversed by a vanishing, immersed midrib ; apices 
and laciniae very obtuse. 
Attachment a disc, 4 mm. to 9 mm. thick, with a few short clasping 
branches. Stem cylindrical, very hard and woody, branched ; the branches 
dividing irregularly, soon, becoming winged at the edges and passing 
upwards into the strongly ribbed phyllodia. Phyllodia 8 cm. to 15 cm. 
