64 



The Flora of Wiltshire. 



3. R. systyla (Woods,) close styled Dog Rose. The name systyla 

 is compounded of sun, united, and stubs, a column. The styles 

 being united in a column. Engl. Bot. t. 1895. 



Locality. Hedges and thickets on stiff clay soil. Rare. Sh. Fl. 

 June, July. Area, 1. 2. 3. 4. 5. Sparingly distributed through the 

 Districts, nearly resembling in its more frequent form R. canina 

 (Linn.) in habit, but well distinguished by its rough glandular or 

 bristly peduncles and close hairless styles, often reaching the 

 height of eight or twelve feet, its erect habit being the chief char- 

 acter of distinction from the next species. 



4. R. arvensis (Huds.) trailing white Dog Rose. Engl. Bot. t. 

 188. 



Locality. Shady hedges, thickets, woods, and on the borders of 

 fields, not uncommon. Sh. Fl. June, July. Area, 1. 2. 3. 4. 5. 

 Common in all the Districts. 



This is distinguished from all the other British species by its 

 trailing habit, its cord-like decumbent shoots, and solitary scattered 

 prickles. The Ayrshire Rose which is supposed by some to be of 

 American origin, and to have been introduced into Ayrshire by 

 the Earl of Loudon is considered by some botanists as only a 

 variety of R. arvensis. 



Crataegus (Linn.) Hawthorn. 

 Linn. CI. xii. Ord. ii. 



Name. From (cratos) strength, in reference to the hardness and 

 strength of the wood. 



1. C. oxyacantha (Linn.) Hawthorn, White-thorn or May. The 

 Latin noun oxycantha is a compound of oxu sharp, and acanthi 

 a thorn, sharp-thorned. Engl. Bot. t. 2504. 



Locality. Everywhere planted for fences, but abundantly wild 

 in woods, thickets, bushy fields, pastures, &c. Shrub or Tree. FL 

 May, June, bears fruit in September. Area, 1. 2. 3. 4. 5. In all 

 the Districts. Variable in the form of its leaves, the down of its 

 foliage and calyx, the number of styles, and the colour and size of 

 the flower and fruit. This beautiful shrub which forms the hedges, 

 and natural thickets in most parts of the county attains a size from 



