158 ROSACE AE 



in any botanical work, Dr. Noehden in Mavor's Agr. Berks, 1809. 

 (Probably this is Lathijriis Viciaeformis, Blackstone, Spec. Bot. 1746.) 



2. Ock. Bagley Wood, Scott in Walk. Fl. Tubney, Walker. 



3. Pang. Streatley, Pamplin. Sulham Wood, Tufnail. Bradfield, 



Jenkinson. East Ilsley, a very broad-leaved form, Hewett, 1839. 

 Grimsbury Castle. Oare Wood. Cold Ash. Ashampstead. 

 Hawkridge. Heath Wood near Bradfield. Moulsford. Fence 

 Wood. 



4. Kennet. Inkpen. Wasing. Aldermaston. Wickham Heath. 



Tilcombe Green. Woodhay. 



5. Loddon. Finchampstead Wood, Penny. Bulmarsh Park, Tufnail, 



where both forms occur. Billingbear Park, Salman. Rather 

 common about Park Place, Stanton. In Windsor Forest, Br. 

 Noehden. Woods near Marlow, Mill. Ascot. Swinley. Woking- 

 ham. Farley Hill. Risely. Bracknell. Quarry Wood. Bowsey 

 Hill. Ashley Hill. Stubbing's Heath. Pinkney's Green. 

 Bisham Wood. Warren Row. 

 Var. LiNiFOLius, Asch. Fl. Brand. 169 (1864), is the narrow-leaved 

 form first mentioned by Dr. Noehden, sometimes found growing with 

 the ordinary form. Dr. Noehden saw it near Windsor, Mr. Tufnail 

 reports it from Bulmarsh, and I have seen it at Bradfield, Heath 

 Wood, Bucklebury, at Ascot, at Wokingham, &c. Intermediate forms 

 are found. 



L. montanus is recorded for all the bordering counties. 



[Ii. TDBEKosus, Lliin. Sp. PI. 732 (1753). Syme, E. B. ill. 105, t. 401. Nyraan, 201. 



A few plants have been seen on St. Vincent's Rocks, at Clifton, W. Glou- 

 cestershire, by Miss Woods, where doubtless they are a recent introduction, 

 for so conspicuous a plant would not have remained unnoticed in a spot so 

 frequented by botanists. 



It is found in no other bordering county.] 



EOSACEAE, Juss. Hort. Trianon (1759). 

 PRUNUS, Linn. Gen. n. 546 (Tournefort, Inst. t. 398). 

 P. spinosa, Linn. Sp. PI. 475 (1753). Blackthorn, Sloe. 



Top. Bot. 126. Syme, E. B. iii. 114, t. 408. Nyman, 214. Fl. Oxf. 92. 



Native. Sylvestral. Woods, coppices, and hedges. Abundant through 

 the less elevated portion of the county, and occurs in all the dis- 

 tricts. It is less plentiful on the heath-lands of the south. 

 Shrub. March-May. 



First record. P. spinosa. Hedges. Common, Mavor's Agr. Berks, 1809. 

 With Polystigma rubruin, Pers. in Bagley Wood, Baxter, Stirp. Crypt. 

 Ox. 1825. 

 The Blackthorn varies very much in the size of the flowers, in the 



width of the petals, in the colour of the stamens, and in the shape and 



