Notes . 
409 
chaete repens , Berth., are erroneous 1 , and that this latter species 
belongs to the same genus as the three species of Herposteiron 
mentioned on p. 373. I am entirely of Klebahn's opinion 2 , that these 
four species should be included in the genus Aphanochaete , Braun, 
which has priority over the Herposteiron of Nageli; and that this 
latter genus, together with Aphanochaete , Berth., which was never 
established by the author, whose name is appended to it 3 , be dropped 
altogether. Herposteiron globosa, Nordst., has been included by 
Klebahn partly in his genus Chaetosphaeridium , and partly in Dicoleon , 
Kleb. ; Herposteiron polytricha , Nordst., is put by him in a new genus 
Conochaete. There seem ample reasons for these separations. 
A few more words may be said on the species from Sheen Common. 
As I have mentioned above, it is certainly not a stage in the develop- 
ment of a Stigeoclonium , as Herposteiron poly chaete, Hansg., may be. 
It, however, evidently does not agree in several respects with the 
specimens of A. repens , Braun, that I have seen; for these latter 
specimens have all only one hair to each cell 4 , and these hairs have 
a broader base than in my species. Other differences are to be 
found in the average number of cells in each individual, and in the 
branching of the filaments in A. repens , Braun. There is scarcely 
sufficient evidence to warrant my establishing a new species, and for 
the present I place it in Herposteiron polychaete , Hansg., which must 
now go under the nam z A. polychaete (Hansg.) Fritsch. I think it 
very probable that this is really the species I have examined. 
I add a scheme of the classification of the species discussed above 6 , 
according with the views expressed in this note : — 
Genus Aphanochaete , Braun (1849). 
1. A. repens , Br., Verjiingung, 1849-50, p. 196, foot-note (— A. 
repens , Berth. 6 ). 
1 Cf. Klebahn, Pringsheim’s Jahrbuch, vol. xxv, 1893, p. 290; cf. also Huber in 
Journal de Botanique, 1892, p. 337. 
3 Klebahn, loc. cit, p. 294 ; his remarks do not include Herposteiron polychaete , 
Hansg. 
3 Klebahn, loc. cit., p. 290. 
4 According to Huber, Journal de Botanique, 1892, p. 327, A. repens sometimes 
bears two or more hairs on each cell, but as far as I have seen this does not occur 
nearly as frequently as in the species I have examined. 
5 No count is taken here of species published after Hansgirg’s paper in the 
Flora of 1888. 
6 There is no reason now for believing that A . repens , Berth., differs in any 
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