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THE SEAWEEDS 
MICROPEUCE J. Agardh. 
Frond terete, pinnate, branched, the larger ramuli apparently 
inarticulate, the inner siphons ending unevenly ; the cortex of cells closes 
over the ends, the smaller ramuli above emitting inarticulate monosiphoned 
ramelli. Cystocarps and antheridia unknown. Tetrasporangia carried on 
the polysiphonous apices of the ramuli, in the small cells of the stichidia, 
arranged spirally, triangularly divided. 
Micropeuce strobilif erum J. Agardh. 
Frond 6 cm. to 9 cm. long, pyramidal, the ramuli alternate, pinnate, 
irregular. The structure of the adult frond is strongly cellular (siphons 
more or less transformed). According to J. Agardh this plant closely 
resembles Trigenea. 
South Australia (Port Elliot). 
Subfamily Bostrychieae Falkenberg. 
WILSONAEA Schmitz. 
Frond radiating, slightly dorsi-ventral structure, increasingly mono- 
podial. The ramuli long, bearing one to two rows of lateral ramelli ; above, 
the ramuli branch everywhere alternately and end abruptly in monosi- 
phonous apices. The central cells (five below and four above) surrounded 
by a parenchymal cortex. Stichidia cylindrical, slightly curved, fertile 
on the sides and dorsum, polysiphonous, shortly pedicellate, apices often 
monosiphonous, coronate with minute cortical cellules. Tetrasporangia 
verticillate. 
Wilsanaea dictyuroides (J. Ag.) Schmitz. 
t= Dasya dictyuroides J. Agardh. 
Frond 9-14 cm. long, terete, pinnately branched, ramelli dense at the 
apices, sub-squarrose, covering the upper part of the rachis, the lower ones 
longer and curved in. Stichidia prominent, wide at the base, subsessile, 
conical, fertile in the articulations. 
South Coast of Australia. 
BOSTRYCHIA Montagne. 
Frond filiform, pinnately branched, inarticulate, tesselated with quadrate 
or hexagonal cells ; axis tubular, articulated, surrounded by one or more 
concentric rows of coloured cells. Ramuli hook-pointed. Cystocarps 
terminal, ovate, containing a tuft of pear-shaped spores. Stichidia terminal, 
fusiform, containing a double row of tetraspores. 
Bostrychia simplicius cula Harvey. 
«= Bostrychia rivularis Harvey. 
Frond caespitose, intricate, widely spreading, the attachment filaments 
elongate, monosiphonous ; the filaments of the frond are ecorticate, 
the primary ones prostrate, widely branched, the secondary ones erect, 
simple, or sparsely branched, very elongate and attenuated at the upright 
apices; polysiphonous. Fruit unknown. Colour dirty red. 
Victoria (Port Fairy), Friendly Islands. 
