NOTES ON BEDFORDSHIRE PLANTS 311 



Lamium hyhridum Vill. Southill, 1912 ; Clophill, 1914. 



Chenopodium liyhridum L. Sandy, 1911. B. E. C. R. 1911, 

 116.— a rulrum L. Southill Park, 1914. 



'Polygonum lapathifolium L. South of Sandy Warren, 1913. 



Rumex limosus Thuill. Pond at Warden Abbey, 1913. Con- 

 firmed by C. E. Moss. 



Mercurialis annua L. Southill, 5 only, 1914. 



Parietaria ramijiora Moench. Potton Churchyard (long un- 

 branched stems), 1911. 



^Cnstanea sativa Mill. Sandy, 1911 ; Rowney Warren, 1911; 

 Clophill, 1914. 



Populus. See Journ. Bot. 1916, 253. 



Ceratopliyllum djemersum L. Lake in Southill Park, 1912. 



Cephalanthera yrandijiora Gray. Pegsdon, 1909 ; Barton, 1910. 



Orchis prcetermissa Druce. Below Cadwell Bridge. — O. ustulata 

 L. Pegsdon. 



Ophrys apifera Huds. Arlesey Brick Co's pit (gau!t), 1910. — 

 0. muscifera Huds. Barton Leet Wood, 1910 : Pegsdon, 1909. 



JIahenaria virescens Druce. Sheerhatch Wood, 1912 ; Southill, 

 1913. 



Allium vineale L. var. compacfum (Thuill.). Arlesey ; Clifton, 

 1912 ; Stanfordbury, Shefford, 1913. 



Juncus suhnodulosus Schrank. Southill, 1912. 



Sparganinm simplex Huds. Biggleswade Common, 1913 (with 

 branches 5-6 cm. long, bearing both 5 and J heads). "Your speci- 

 mens have essentially the habit and growth of simplex, but the 

 branched spikes I have never seen before." A. Bennett in litt., 

 20 Feb., 1914. 



Typha latifolia L. var. media Sj^me. Arlesey Brick Co.'s Pit, 

 1911, with t^'pe and T. angusfifolia L. 



Potamogeton perfoliatus'L. Shefford, 1911; det. A. Pennetf. — 

 P,p)usillus L. var. tenuissimns Koch f. angustifolius Fischer; det. 

 A. Bennett. Lake at Southill Park, 1913, W. E. C. R. 1913, 461. 

 I have not been able to procure it in fruit. Mr. C. E. Salmon says 

 *' the leaf apex reminds one of P. rutilus.'" — P. pectinatus L. Lake 

 at Southill Park, 1913. 



Zannichellia palustris L. var. hracJiystemon (Gay). Arlesey 

 Brick Co.'s Pit, 1910. 



Carex Pairei F. Schultz. Rowney Warren, 1914. — C. pilulifera 

 L. Sandy Warren ; Rowney Warren, 1911. 



* Antlioxantliium aristatum Boiss. Everton, 1911, B. E. C. R. 

 1911, 137. 



Plileum pratense L. var. nodosum (L.). Galley Hill, Potton, 

 1913 ; Sandy, 1909. 



Agrostis canina L. var. mutica Doell. Sand3% 1913. 



Pescliampsia Jlexuosa Trin. Sandy ; Sutton ; Rowney Warren. 

 1911. 



Avena pratensis L. Barton, 1910; Pegsdon, 1913. 



Catahrosa aquatica Beauv. Biggleswade, 1913. 



Poa comp>ressa L. Shefford, 1911. 



Festuca hromoides L. Sandy, 1911. Var. Broteri (Boiss. & 



