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HEPATI (LE SPRUCE AN^E: AMAZONIC^S ET 
ANDINiE. 
Under the above title a fasciculus is being published, comprising 
specimens of all those hepatics described in the work “ Hepaticce 
of the Amazon and Andes,” which were gathered in sufficient 
quantity for distribution ; with a few additional ones that were left 
undetermined when that work was printed. The sets contain about 
400 species, all named, and the price is 30 shillings the hundred. 
It is hardly necessary to observe that no such extensive collec- 
tion of Hepaticae Exsiccatae has ever been offered to the public in 
any country. The specimens are all named ; a much larger pro- 
portion than usually found in collections of this tribe are in a perfect 
state, and several of them are of extreme rarity and beauty. 
NEW OR CRITICAL BRITISH ALGM. 
By E. A. L. Batters, B.A., LL.B., F.L.S. 
Calothxix contaxenii, Bornet et Flahault , Ann. Sc. Nat., Ser. 7, Vol. 
III., p. 355. 
Weymouth. On wood-work. Autumn. 
Fronds forming a compact, more or less circular, black -green, 
smooth, shining expansion. Threads closely packed, parallel, 
erect, slightly flexuous, reaching 1 m.m. in height and from 9 to 
15 ft, in diameter, lower portion decumbent and more or less swollen. 
Sheath thickish, colourless, or yellowish brown. Trichoma 6-8 p 
in diameter, ending in a long, slender, hyaline hair. Articulations 
shorter than or equal to their diameter. Heterocysts one or two 
basal. 
This species, as MM. Bornet et Flahault have pointed out, is 
chiefly distinguished from C. scopulorum, Ag., its nearest ally, by 
the nature of the expansion it forms, which is smooth and fleshy 
to the feel, and greatly resembles that of Isactes plana , Thur., for 
which, no doubt, it has often been mistaken in this country. 
Phaeophila floxideaxum, Kauck., Meeresalg p. 464. 
Weymouth. On Rhodymenia palmata, Grev. Sept. 
Thallus microscopic, consisting of irregularly-branched, articu- 
lated filaments, with one, or frequently two, long, soft, simple 
hairs arising from the upper surface of each cell. Cells 10-40 
in diameter, and either equal to or many times longer than broad. 
The filaments creep either over the surface or between the cells of 
the frond of the host plant. 
This and the following species were originally placed in the genus 
Phceophila, Hauck., a genus which Professor Hansgirg (Oesterr. 
Bot. Zeitschr., xlii., 1892, pp. 199-201) thinks there is reason for 
sinking in the much older genus Ochlochcete, Thw. 
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