400 SHORT NOTES. 



Jackson. It seems, however, that this was not the case ; Asa Gray 

 (Amer. Journ. Sci. xl. 228 (1841)) Avrites : '' J/icksonia, Eafinesque 

 changed m 1819 to Polauida, probably on account of the Jacksonia 

 of Brown, 1812, bi/ ivhich General Jackson lost a f/eiius.'' — James 

 Britten. 



Elatine Hydropiper L. in Surrey. — When visiting Cutmill 

 Pond, near Godahning, Surrey, in company with Miss M. Phear, on 

 August 31st, we found a considerable abundance of Elatine he.ranclra 

 in full flower growing both in and out of the water amidst the turf 

 of Kleocharis acicnlaris that bordered the pond. We also found 

 E. Hi/dropiper, but more sparingly : the flowers were over, and the 

 characteristic hooked seeds well formed. Owing to the dry season, 

 the water was at a lower level than usual, and this may have 

 favoured the growth of the waterworts. We are not aware that 

 E. Hydropiper has been recorded hitherto from any English 

 locality except Frensham Pond, near Farnham, quoted by Hooker 

 and others in their manuals of British Botany. — G. Lister. 



Plantago media in Antrim (p. 351). — If Mr. Brenan will look at 

 Irish Naturalist, v. 311 (1896), he will find two Antrim stations 

 mentioned in Mr. J. H. Davies's "Notes on some Casuals in 

 County Antrim." — R. Lloyd Praeger. 



Lathyrus Aphaca in Cambridgeshire (p. 353). — Soon after the 

 publication of my note, Mr. Reader informed me that Mr. Evans 

 rediscovered Lathyrus Aphaca in an old locality. Mr. H. N. Dixon 

 writes to confirm this, saying that he gathered it on the Hills Road, 

 a little outside Cambridge, in 1878 or 1879. This goes to show 

 that it is permanent there. Mr. Dixon also informs me that he 

 has a specimen from Stapleford, collected in 1878. — A. B. Jackson. 



Cambridgeshire Plants (p. 246). — To those unacquainted with 

 the flora of Cambridgeshire the formidable list of " extinctions " given 

 by Mr. W. West, jun., on p. 247 may seem appalhng. In his 

 opinion Middlesex is the only county which rivals ours in this un- 

 enviable distinction. To avoid misapprehension it seems desirable 

 to point out that, of the forty-nine species given in the list, no fewer 

 than thirty-four are inserted in Prof. Babington's Elora solely on 

 the testimony of botanists termed by him " ancient authorities " — 

 ranging from 1685 to 1820 — most of these species for a single 

 station only; and, as he remarks, " the localities have not been con- 

 firmed by recent observers." Of the remainder, five occurred only 

 on a piece of boggy heath at Gamlingay, the drainage of which had, 

 as Prof. Babington observes, been destructive to some plants even 

 before the Elora was issued. We must inevitably suffer, as other 

 counties do, from the drainage and cultivation of many hitherto 

 neglected spots, but I trust our plants are not disappearing so 

 rapidly as Mr. West would lead us to believe. I may remark that 

 Lathyrus Afhaca has not " disa})peared from all its localities near 

 Cambridge"; this year there are five distinct patclies of it at a 

 station not far from the town, where I have known it for fifteen 

 years. The locality is possibly one of those intended in the Elora, 

 but for obvious reasons I forbear giving more precise details, 



