21 
§. australense, Moebius (n. sp.). Prof. Moebius says :—* Of this 
little alga, which was only observed in one complete specimen, I must 
make a new species, because none of the diagnoses of the known 
species are applicable to it ; and I, moreover, have found no repre- 
sentation corresponding to it (Fig. 15). The numerous main branches 
proceeding from one side form a tuft 2 mm. high. e cells are 
eylindrical, somewhat thinner above than below; as a general rule, 6- 
broad and 2-5 times as long. The chromatophore almost entirely fills 
the cells. The larger branches are given off for the most part singly, 
rarely opposite, and are beset above with short side branchlets, which 
may also proceed in pairs from one side. The branching is compact, 
the ih are perpendicular ; the majority end in a long, several- 
branching taken up with the formation of swarmspores, then naturally 
swollen and divided into short joints. Rhizoids are wanting.” 
is being a new species, Prof. Moebius describes it in Latin, as 
follows :—*Thallus ad 2 mm. altus, ramis primariis fasciculatis, ramis 
secundariis plerumque alternis quoquoversum exeuntibus, erecto- 
sciculatis instructis; cellulis fere omnibus eadem magnitudine, 
CONFERVA (Linn.), Link. 
_ Articulate threads simple, articulations cylindrical. Chlorophyllose 
ie homogeneous or granulate, including starch granules. Vegetation 
¥ division in one direction. 
Propagation unknown (? by resting-spores, which vrs gaated 
: N. Wille has declared his belief in the universality of resting- 
3 ate in the whole genus Conferva, although it is hardly clear what 
his conception of the limits of the genus. In a new species, which 
ccount of spore formation, which, it is presumed, may be 
con: type of what usually takes place. The chlorophyllaceous 
ntents contract, and become rounded. The colouring matter collects 
val pally in the ends of the cells, so that the substance in the middle 
reeats almost col : he contraction of the cell- 
conten colourless; but after the 
- Re 
detailed a 
pt 
: thin the mother-cell ; they then begin to surround themselves wit 
r 
celled hair. There were numerous cells in the neighbourhood of the 
entibus, plurimis in pilos longes productis, ramis brevibus . 
has described under the name of Conferva Wittrock, he gives 
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