juNcus 499 



2. Ock. In the saline meadow at Marchani with other semi- 

 maritime plants. 



Professor Buchenau accepts the name, but states that the inner 

 perianth leaves are broader than usual. 



The longer style appears to be a good character by which it may be 

 distinguished from J. compressus ; the outer perianth leaves are also 

 darker in colour. 



I am not aware of its being found in any inland locality in any of 

 the bordering counties except E. Gloucestershire, if that is correctly 

 reported. 



J. g-laiicus, Ehrh. Beitr. vi. (1791) 83, and Sibth. Fl. Oxf. 113 (1794). 

 Hard Bush. 



J. hiflexus, Linn. Sp. PI. 326 (and Huds. and With.), the earliest 



name. J. acutus, Gerard, 31, not of Linn, 

 Top. Bot. 430. Syme. E. B. x. 25, t. 1563. Nyman, 746, Fl. Oxf. 310. 

 Native. Paludal. Wet meadows, roadsides, commons, especially 



addicted to stiff clay soils. P. June-July. 

 First record. Sonning, Mr. S. Paiclge in Herh. Brit. Mus. 1800. [Omitted 



from Mavor's Agr. Berks, 1809.] 

 Plentiful in low-lying situations in all the districts, and often 

 marking the juncture of a pervious with an impervious stratum. My 

 friend, the Eev. W. M. Rogers, tells me he only saw it at Catmore 

 during his residence at Peasemore, and it is indeed absent from con- 

 siderable areas of the upper chalk formation ; but as that becomes 

 obscured or covered with tertiary formations, which include the 

 London Clay, then the Hard Rush makes its appearance. It is 

 therefore most plentiful in the Isis district on the Oxford Clay, in the 

 Ock district on the Kimeridge Clay, Iqcal in the Pang and Kennet 

 districts, but frequent on the London Clay in the Loddon district. 



It was found as a large form, three feet high with stems twice the 

 usual thickness and with paler leaf sheaths, by a pond in Wytham, 

 but the pith was interrupted, the stems glaucous and deeply striate, 

 and the seeds normal, so that it is not a hybrid, but probably only 

 a form caused by permanent .moisture and shade. See Rep. of Bot. 

 Exch. Cluh, 1892. 



The name J. inflexus has strong claims for adoption, if actual priority be 

 enforced, and it may have to be used ; but I have followed Buchenau in 

 retaining the well-known name of J. glaucus, about the meaning of which 

 there has been no confusion. 



J. glaucus is found in all the bordering counties. 



X J. diifusus, Hoppe, Decad. Gram. n. 155, and in Flora i. (1819) 186. 

 J. glauco-effusus, Schnitz. u. Frick. Veget. Verhl. 200. J. effususx 

 glaucus, Buchen. in Engl. Bot. Jahrb. (1886) 162. 



K k 2 



