1858.] THIRSK NATURAL HISTORY SOCIETY. 593 



this plant with Mr. Buxton, at Dr. Windsor's ; and a series of 

 examples, with which Mr. John Hardy, of Hulme, has furnished 

 ns, leave little scope to doubt its identity with Barbarea inter- 

 media of Boreau, as a comparison of the following epitome of 

 the characters of the Manchester plant, which I have drawn up, 

 with the original description in the ' Flore du Centre de la 

 France' (vol. ii. p. 48), and that of Grenier and Godron, will 

 show. Stem 1^-2 feet high, robust, angular, usually with several 

 erecto-patent branches. Leaves lyrate-pinnatifid; the terminal 

 lobes in those of the root cordate, and much larger than the 

 lateral tobesj uppermost stem-leaves with the lobes all linear- 

 oblong and entire. Flowers pale-yellow, moderate in size. 

 Fruit-bearing raceme elongated. Silicles numerous, adpressed 

 to the stem or erecto-patent, terminated by a short, blunt style. 

 It may be known from vulgaris and sti'icta by its pr^cox-\\ke 

 leaves and short styles ; from pr(Scox by its more robust habit of 

 growth, and by its closer and more numerous silicles, which are 

 only about half the size of those of that species. It grows in 

 several localities in the vicinity of Manchester, and at first was 

 labelled p7'<Bcox by the botanists who gathered it, but this no- 

 menclature was given up when the true pracox was found. It 

 is quite probable that it may have been passed over for prcecox 

 in other parts of Britain. Upon the Continent it is reported 

 from several parts of France, from Belgivim (Nyman, but not 

 mentioned in Michaud's ' Flore generale de la Belgique ') , and 

 if B. angustana, of Boissier, be the same, as there appears rea- 

 son to believe, from Piedmont. By Boreau its stations are given 

 as ' lieux frais ou humides ;' by Grenier and Godron, as ^ lieux 

 humides ;' by Lloyd (' Flore de I'ouest de la France '), as ' champs 

 en friche.' With us in this country, it seems to be confined to 

 stations similar to those of precox, cultivated fields and waste 

 ground. If, with the first volume of the 'Cybele,' we rank 

 praecox as an alien, then doubtless we ought to call intermedia 

 an alien also; but if, with Babington and A. De Candolle, we 

 admit prcecox to a higher grade of citizenship, then, perhaps, we 

 should be justified in placing this too in the category of colonists. 

 A set of specimens is ready for distribution to our members. 



" Aremonia agrimonioides. At our January meeting you will 

 remember that I expressed a disbelief in the occurrence of this 

 plant of the south of Europe, in a spontaneous state, in Perth- 



N. S. VOL. II. 4 G 



