NOTES ON MIDDLESEX PLANTS. 37 



Pyriis Aria. Several fine trees skirt Old Park Wood on the 

 north, — P. torminalis. Eecorded as "just out of the county, in 

 Herts"; is to be found sparingly in hedgerows about Harefield. 



Epilobium macrocarpum. Very abundant in swampy copses from 

 Uxbridge Common and Swakeleys to Ickenham. — K. ruseum. 

 Ditch by Warren Pond, Breakspeares ; and Old Park Wood. — 

 E. pnlustre. Bog close to Moor Hall. 



Mi/riophi/llum verticiUatum. Uxbridge Moor, Harefield Moor , 

 and elsewhere. 



CJinjsospJenimn oppositifoJinm. In a boggy corner of Old Park 

 Wood, abundantly. 



Torilis nodosa. On a sandy bank, Uxbridge Moor. 



Galium Cruciata. Apparently very scarce ; I have met with 

 only a single plant in Long Lane, Hillingdon. 



Dipsacus pilosus. Plentiful in a copse, and on banks near Den- 

 ham Lock ; Harefield Eoad, near Moor Hall. 



Inula Helenium. Several plants in a wet meadow near North- 

 wood (extinct in Blackstone's stations). — I. Conyza. Several 

 plants in an old pit in the meadow between Jack's Lock and the 

 Copper Mills (extinct in the "old chalk-pit" as recorded by Black- 

 stone). 



Pulicaria vuhjans. On the west side of Staines Common, close 

 to the London Eoad, plentifully. (Cannot find this in any of the 

 stations recorded). 



Serratula tinctoria. This also seems very scarce ; I have met 

 with it only at Pole Hill, Hillingdon. 



Centaurea solstitialis. Two or three plants in fields above 

 Uxbridge (introduced). 



Carduus tenuijiorus. Staines Moor. 



Gentiana AmareUa. This species, with Campanula TracheUum 

 and Chlora perfoliata, appears to extend over a wider area than 

 supposed ; it grows by the side of an old pit at Springwell ; 

 abundantly on the steep slopes of the down beyond, and sparingly 

 on chalky banks to the boundary. 



Villarsia nymphccoidos. Grows higher up the Thames than Wal- 

 ton Bridge. 



Cuscuta Trifolii. Very abundant in clover-fields about Springwell. 



EcMiim vuigare. In the same fields. 



Lithospervmm arvense. About Colnbrook. 



Hyoscyavms niger. Near Uxbridge Common. (Grew lately near 

 Cowley, on waste ground by the Colne, but now extinct). 



Mentha yentilis. In some quantity in the marshy bottom of a 

 heathy waste near Northwood. (Mr. Arthur Bennett has kindly 

 named this plant). 



Calamintha officinalis. In several places about Harefield, and 

 evidently — as suggested by the authors of the ' Flora of Middlesex ' 

 — the var. Briggsii. — C. Acinos. Mr. Newbould's record of "a 

 single specimen in the old chalk-pit, Harefield" is somewhat 

 misleading : it grows there plentifully, and is a troublesome weed 

 in the fields above. 



Nepeta Cataria. About Harefield, in several places, sparingly. 



