88 Botany. 



302. L. usitatissimum, L. 7, A. Common Flax or Linseed ; only an 

 escape from cultivation. The seeds are linseed, and flax is 

 the bast fibres, which are 20-40 mm. long and as strong as 

 iron. 



N.O. 5. RUTACE&. 



Ruta graveolens, L. (the GARDEN RUE) is cultivated. 

 Citrus aurantium, L., is the Orange. 



N.O. 6. SIMARUBACE&. 



Ailanthus glandulosa, a tree commonly planted in parks and 

 gardens ; like the Elm, new shoots arise from the spreading 

 roots and so propagate the pi. 



N.O. 7. POLYGALACE&. 



(58) POLYGALA, L. (MILKWORT). 



185. P. vulgaris, L. (under VULGARIS, B. includes all the English 



forms), 6 9, P. Dry pastures and Chalk Downs ; abt. 



186. P. oxyptera, Reich. 5 7, P. Dry, esp. chalky places ; v. local. 



1. Chalk Downs, N. of Ryarsh. Rogers. 



2. Nr. Wrotham (Mrs. Benson) ; Dartford Heath (H.). 



187. P. serpyllacea, Weihe. 6 9, P. Damp gravelly heaths ; not 



uncommon. 



1. Bostall Heath. Dod. 



2. Meadow opposite the " Fox," Keston, '03. W.H.G. 



188 P. calcarea, F. Sch. 57, P. Chalk Downs ; locally abt, 



1. Upper Hailing. Dod. 



2. Plentiful on chalky hillsides about Down, '06. W.H.G. 



3. Trottescliffe ; between Shoreham and Otford ; Morant's 



Court Hill. M. 

 a. First record, 1834 : Cuxton and Cobham. 



