PRUNUS 159 



size of the fruit. Several forms are beautifully figured in Jordan and 

 Fourreau's Icones ad Floram Europae. Our Berkshire plants include 

 the following. 



Var. DENSiFLORA (Jord. and Fourr. Icones, 1. 151, f. 220, as a species), 

 the frequent plant with us, is one in which the flowers are small and 

 thickly clustered together, and appear before the leaves. 



Var. RUSTiCANA (Jord. and Fourr. I.e., t. 152, f. 221, as a species), is 

 a plant with slightly larger, less thickly clustered flowers, and with 

 the fruit obtuse and depressed at the apex. 



Var. MACROCARPA, Wallr. Sched. PI. Crit. 217 (1822^ = P. fruticcms, 

 Weihe, in Flora, ix. (1826) 748, in which the leaves and flowers are 

 found at the same time, is not unfrequent, especially in the Isis and 

 Ock districts. 



Other varieties with large flowers and fruit connect P. spinosa with 

 P. insititia. 



P. insititia, Linn. Amoen. Acad. iv. 273 (1759). Bullace. 



Top. Bot. 126. Syme, E. B. iii. 117, t. 409. Nyman, 214. Fl. Oxf. 92. 

 Denizen or native. Septal. Hedges, rather common and widely dis- 

 tributed. Shrub. April-May. 

 First record. P. insititia, Mr. J. Lousley in Russell's Cat. 1839. 



1. Isis. Wytham. Besilsleigh. Appleton. Longworth. Buck- 



land. Faringdon. Buscot. Coleshill. Shrivenham. Ash- 

 bury, &c. 



2. Ock. In Upton grounds, Lousleij. Denchworth, Wait. Bagley 



Wood. S. Hinksey. Kadley. Wallingford. Blewbury. Aston 

 Tirrel. Lockinge. "Wantage. Ufiington. Garford. Pusey. 

 Tubney. Boar's Hill, &c. 



3. Pang. In Beech Wood and in some of the hedgerows about 



Hampstead Norris, Lousley. Pangbourn. Tidmarsh. Engle- 

 field. Bradfield. Ashampstead. Bucklebury. Hawkridge. 

 Yattendon. Compton. Tilehurst. 



4. Kennet. W. Woodhay, Inkpen, &c., Beeks in Britt. Contr. Mor- 



timer. Burghfield. Hungerford. Kintbury. Lambourn. 

 Fawley. Snelsmore. Theale, &c. 



5. Loddon. Arborfield, Tayler. Stubbing's Heath. Cookham. 



Bisham. Wargrave. Hurst. Early. Swallowfield. Farley 



Hill. Finchampstead. Windsor, &c. 

 Several forms are beautifully figured as species in Jordan and 

 Fourreau's Icones. Of these, which I should call varieties, I have 

 noticed var. sepivaga, var. dumetorum, and var. agrestis in Berkshire ; 

 the first has large flowers, ovate leaves, and round fruit, the second 

 has elliptic leaves and bright yellow anthers, the third has the flowers 

 on longer peduncles, ovate sub-retuse petals, and orange anthers. 



