OF SOUTH AUSTRALIA. 
285 
Brongniartella sarcoeaulon (Harv.) Schmitz. 
Frond over 15 cm. high, 2 mm. to 4mm. in diameter, opaque and thickly 
coated with small cells throughout, tapering to the ends of the branches, 
irregularly divided, but not much branched. Pericentral cells five. Stem 
and branches glabrous, bare of ramelli ; lesser branches sprinkled with 
short ramuli ; ramuli patent, awl-shaped or thread-shaped, opaque, beset on 
all sides with very slender, minute, dichotomous ramelli, less than 2 mm. 
long, articulated; articulations thrice as long as broad. Colour rosy-red. 
Substance soft, succulent ; adheres closely to paper. Stichidia containing 
large tetraspores, single in each articulus. 
South Australia (Eastern Bays), Western Australia, Tasmania. 
Brongniartella disticha Falkenberg. 
Frond 2 cm. to 14 cm. long, ramuli distichous, arising from every third 
or fourth articulation ; the ramelli monosiphonous, endochrome persisting 
throughout; rigid as in B. australis. Tetrasporangia simple in the articula- 
tions of the stichidia, disposed spirally. Colour brownish-red. 
Victoria (Port Philip). 
LOPHOTHALIA Kiitzing. 
b ronds terete, polysiphonous, with five siphons surrounding a central 
one, corticated with rhizoids, all branches covered with long ramelli, 
coloured, monosiphonous and simple. Cystocarps ovate subglobose, with a 
cellular pericarp, osteolate ; carpospores pyriform, formed in terminal 
articulations of filaments radiating from a basal placenta. Stichidia more 
or less transformed from the rachis, monosiphonous or polysiphonous ; 
tetrasporangia two in each articulus, in subspiral order, cruciately divided, 
often prominent. 
Lophothalia verticillata (Harv.) Kiitzing. 
= Dasya verticillata Harvey. 
Frond 20 cm. to 30 cm. long or more, 2 mm. in diameter below, gradually 
attenuated, undivided, furnished with alternate branches, the lowest of 
which are longest. Branches tapering to the base and apex, much more 
slender than the stem, twice pinnated with branchlets, the smaller of which 
show external signs of joints. The two last series of branches are whorled 
at short intervals with simple, byssoid, 'single-tubed ramelli, whose joints 
are four to eight times longer than broad, the lower joints being shortest. 
Substance cartilaginous, the stem imperfectly adhering to paper; the lesser 
branches very flaccid and tender. Colour a fine crimson-red. A transverse 
section of the stem shows four principal tubes surrounding a minute central 
cavity, and four minor intermediate ones; the spaces between being densely 
cellular. The stichidia are very curious and unlike those of any other genus 
except D. bolbochaete. 
South Australia (Eastern Bays), Victoria, Tasmania. 
