XIX 



Leersia oryzoides. — Mr. A. W. Bennett records (iv. 312) the dis- 

 covery of this extremely local plant in a new locality, viz.^ in 

 the river Mole, at Brockham Green, Surrey. Mr. Watson, 

 following up the discovery, has found it again, in company 

 with Polygonum mite, on the muddy margin of the same 

 river, almost close to the foot-bridge over that river, and 

 almost midway between East Moulsey Church and Ember 

 River. " Other localities," says Mr. Watson, " will probably 

 be found between Reigate and Moulsey, along the course of 

 the river Mole, and between Hampton Court and London, 

 along the course of the Thames. The plant grows in tufts, 

 but the outer stems do really become somewhat procumbent 

 at the base (Bab. Man. edit. 3, p. 385), and take root from 

 the lower joints." — 5o^ Gaz. 1851, p. 154. 



III. Critical Remarks on Disputed or Doubtful Species. 



Lastrea recurva. — Mr. E. T. Bennett has some interesting obser- 

 vations on the distinctness (iv. 4) of this plant. It is made to 

 plead its own cause at p. 48. The Rev. W. S. Hore sup- 

 ports the plea (iv, 96), and pronounces it " the most distinct 

 of our indigenous ferns," as also does Mr. R. White (iv. 108) 

 and the Rev. W. T. Bree (iv. 145). 



Lastrea uliginosa. — Mr. John Lloyd, the original detector of this 

 fern, agrees in favour of its distinctness (iv. 22). Mr. Charles 

 Wood takes a similar view (iv. 54). It is mentioned by my- 

 self that Professor Braun had distinguished this fern in Ger- 

 many prior to its discovery in England (iv. 55). Mr. Joseph 

 Bray gives his opinion that it is distinct (iv. 72). The Rev. 

 W. S. Hore expresses his dissent from this view (iv. 96j, as 

 also does Mr. Wilson (iv. 105). Mr. Thomas Moore, in a 

 report of the Proceedings of the Botanical Society of Edin- 

 burgh (iv. 149), unhesitatingly describes it as a variety of L. 

 cristata. And finally, Mr. Doubleday, on the wrapper of the 

 July number, says : — " I unhesitatingly state that it is a spe- 

 cies totally distinct from L. cristata." In addition, I may 



