NOTES ON RECENTLY PUBLISHED DESMIDIE.E. 337 



C. Pseudoregnesii. As described in the paper cited, the latter is 

 quite distinct from C. lu'i/ncsii Keinsch, which was there figured 

 witli it for comparison, ileasons were given {I. c. p, 90, footnote) 

 why " polonicinn" could not be adopted as the specific name. If 

 the figure given by Schmidle for C. lieijnesu var. montnnum in 

 lledwiijia really is C. Psemlonynesii, it is a very bad one. Prof. 

 Bchmidle has published a second figure (/. c. t. xv. fig. 11) of his var. 

 montaniuii. and this agrees with C. Fseudorcfjuesii, but if the ori(/inaL 

 figure of 8chmidle's is accurate, then his variety is not C. J'seudo- 

 reijnesii, and for this reason mention of his variety was not made in 

 the footnote above referred to. 



XANTmniUM ALPiNUM Schmidlc [I.e. p. 356, t. xv. fig. 9). Tliis 

 is identical in all respects with Sphcerozosma excavatam Kalfs var. 

 Nov(€-Seiiili(B Wille [Ofvers. af Kongl. Vetensk.-Akad. Forhandl. \xwi. 

 p. 62, t. xiii. fig. 70 (1879)). Perhaps this is a Tetraedon, and not 

 a Desmid. 



Staurastrum dejectum Breb. forma Borge {Bihunfj till K. Svenslc. 

 vet.-akad. Handl. xxi. afd. 3, p. 2-1, fig. l-l). These are forms of 

 S. glahrum (Ehrnb.) Ealfs. 



S. DicKiEi Ealfs var. parallelum Borge {I.e. p. 23, fig. 13) non 

 Nordst. [Freshiv. Alg. New Zeal, d Austr. p. 39, pi. iv. fig. 15). The 

 examples figured by Borge are in our opmion forms of S. lanceo- 

 latnm Arch. 



S. subavicula West [Jotim. Roy. Microscop. Soc. 1894, p. 12). 

 S. arcuatum Nordst. subsp. subavicula West, Journ. R. Microscop. 

 Soc. 1892, p. 732, pi. ix. fig. 25. S. arcuatum Nordst. var. vasta 

 Schmidle, Hedwigia, xxxiii. 1894, p. 94, t. vi. fig. 7. S. vastuni 

 Schmidle, Oesterr. Bot. Zeitsclir. 1896, 59. The species described 

 by Schmidle is precisely the same as the one we described from 

 Brandreth, in the Lake District, in 1892. 



S. sparese-aculeatum Schmidle {I.e. p. 60, tab. xvi. fig. 20j. 

 Is this not a small form of S. Rarenelii Wood ? It seems to agree 

 well with many specimens of the latter species we have examnied 

 from the United States. 



S. poLYTRicHUM Pcrty var. alpinum Schmidle [Hedwigia, 1895, 

 p. 81, taf. 1, fig. 20). This is a fairly typical specimen of S. teli- 

 ferum Kalfs. British specimens of .S. tcii'ferum do not always agree 

 with Ealfs' figures in having the spmes only at the angles, the 

 majority of examples having a few sphies between the angles. The 

 angles of S. teliferum are always broadly rounded (as figured by 

 Schmidle) ; those of S. polgtriehum are acutely rounded. 



S. TRAPEzicuji Boldt. var, campylospinosum Schmidle (/. c. fig. 

 25). This is only a form of S. pyramidatum West, a very frequent 

 species in upland districts. 



S. MEGALONOTUM Nordst. fomia hastata (Liitkemuller) Schmidle 

 [Oesterr. Bot. Zeitsehr. 1896, 72, t. xvii. figs. 6 and 7). Fig. 7 is 

 but a form of IS. spongiosum Breb. 



S. ALTERNANs Brcb. var. coronatum Schmidle {Hedwigia, 1895, 

 p. 82, fig. 24). This does not belong to S. alternans, but is a variety 



