BLACK MOUNTAIN DISTRICT. 23 



east to west, there is an outlying part of Herefordshire, called the 

 Ffwddog ; it is between five and six miles in length, and one in 

 breadth at its widest part. A small portion of the county of Mon- 

 mouth — the vaUey of the little river Honddu, or valley in which 

 stands Llanthony and its Abbey, intervenes between the Ffwddog 

 and the main area of Herefordshire ; but as the Ffwddog is of some 

 extent, and as its greatest distance from the parent county amounts 

 scarcely to three miles, it has been thought better to extend the 

 limits of the present district so as to include both the Ffwddog and 

 the intervening portion of Monmouthshire. By this means we are 

 enabled to include in our list the names of some few plants recorded 

 from the vicinity of Llanthony, but whose locahties were given too 

 vaguely to make it clear to which county they in strictness belong. 

 By the present arrangement this uncertainty is removed, and the 

 plants belong unquestionably to the district to which this Flora 

 relates. 



Whilst, however, a part of Moimiouthshire has thus been appro- 

 priated to District 14, and another outlying portion of the same 

 county adopted into District 2, there are several outliers of our own 

 county which are left to be appropriated by botanists of the adjoin- 

 ing counties j these are 



1. A small piece of ground on Devauden Hill, INIonmouthshire. 



2. A larger portion between Cascob and Whitton, Eadnorshire. 



3. Another of about two square mUes near Eochford, on the 

 left bank of the Teme, about one mile and a half to the ^ast of 

 Tenbury, is physically a part of Worcestershire, and to the able 

 botanists of that county we commend the examination of its plants. 



4. Farlow, the largest outlier (from two to three square miles), 

 is situated at the north-eastern base of the Titterstone Clee HUl, in 

 Shropshire. 



Whitecliff, on the right bank of the Teme at Ludlow, lies within 

 the boundary of Herefordshire, but the Sediun reflexum and other 

 plants which grow there have, like the plants of Farlow, been 

 included in the Eet. W. A. Leighton's "Flora of Shropshire." 

 In order, therefore, to avoid misleading others by including the same 

 station within two county Floras, the Sedum and other Whitecliff 

 plants are omitted in this " Flora of Herefordshire." 



GEOLOGY. — There are certain physical and geographical fea- 



