I. FLOWERING PLANTS. 49 



OXALIS ACETOSELLA. Shady woods ; frequent. Plenty in Epping 

 Forest.* 



PANICUM. See ECHINOCHLOA. 



PAPAVER RHOEAS. Cornfields and waste places ; common, 6-10. Between 

 Hammersmith and Barnes Common ;* cornfields by the Thames.* 



PAPAVER DUBIUM. Cornfields and waste places ; also on walls ; not un- 

 frequent, 5-7. About Croydon ; Mortlake on a wall by the Thames ;* 

 about Willesden Junction railway premises ;* Pinner ;* between Dart- 

 ford and N. slope of Darent Wood in plenty ;* near Ewell ; Box Hill ; 

 Dorking ; and many other places above and below the downs.* 



PAPAVER ARGEMONE. Cornfields in the chalk districts ; rare, 5-7. 

 Cornfield near Greenhithe, towards Darent Wood ;* Box Hill ; Dart- 

 ford and Crayford, between these places ; on gravelly soil N.W. of 

 Hertford ; between Cobham and Cuxton ; Essendon ; Cheshunt ; St. 

 Albans ; Harefield. 



PAPAVER HYBRIDUM. Chalky cornfields ; rare, 5-7. Cornfields between 

 the Merrow Downs and Guildford* (on the slope) ; also on the Hog's 

 Back ;* in a cornfield between Dartford and Darent Wood ;* between 

 Dartford and Northfleet ; cornfields, Harefield ; between Cobham and 

 Cuxton. 



Papaver somniferum. Cultivated fields, incidentally. Between Greenhithe 

 and Darent wood ;* Dartford, in a field near towards Greenstreet 

 Green ;* about Coulsdon ; between Cobham and Cuxton (in a field 

 sloping up to the park) ;* near Headley, coming over the downs from 

 the Dorking road ;* Great Warley. 



PARIETARIA DIFFUSA. Old walls (and in waste places occasionally) ; 

 frequent, 6-9. Fulham by the church wall ;* Mortlake in quantity, 

 wall by the river side ;* wall, Greenhithe near the station ;* walls, 

 St. Mary Cray ; Chigwell ; Highgate ; &c. 



PARIETARIA OFFICINALIS. See P. DIFFUSA. 



PARIS QUADRIFOLIA. Wet shady woods, rare, 5-6. Petz Wood, Chisle- 

 hurst (enclosed) ; Longwood (also enclosed) ; Old Park Wood, Hare- 

 field ; Nutwood, in Gatton Park, Surrey ; Epping Forest ; Fyfield ; 

 woods, Aldbury ; Bay ford Wood ; copse between Reigate Hill and Wray 

 Common ; Ball's Wood ; Easney Park Wood ; copse near Pinner Wood ; 

 and copses on the hills E. of Merstham. 



PARNASSIA PALUSTRIS. Boggy meadows, rare, 8-9. Between High and 

 Chipping Ongar ; and in a marshy meadow at Chipping Ongar ; Hare- 

 field, near the mill (?) olim ; common moor, Rickmansworth ; Boxmoor ; 

 in a boggy field near Cashiobury Park ; Tring reservoirs ; Lea valley, 

 near Hatfield ;* and Hertford ; meadows between Great Berkhampstead 

 and Bourne End, Watford. 



PEDICULARIS PALUSTRIS. Bogs and wet marshy pastures ; frequent, 

 5-9. (Hampstead Heath ;* Putney Heath and Wimbledon Common ;* 

 marshy places by the canal, Woking, &c., in abundance ;* Keston 

 Common.*) 



PEDICULARIS SYLVATICA. Moist heaths and pastures; common, 4-7. 

 (Hampstead Heath ; Putney Heath.*) 



E 



