as those of the branches above them. On weak plants, such as grow in hay 

 fields, this branching habit is much less conspicuous, and the form resemble* 

 much more nearly that of the Orange Hawkweed. The appropriate name of 

 Hieracium cladanthum, or the Branching Hawkweed, has been proposed for 

 tins plant by the specialist in this genus, Mr. Arvet-Touve, of Gieres, France. 

 It is just possible that this yellow-flowered Hawkweed, which is now widely 

 known as the Yellow Devil, may merely be the yellow-flowered variety uf 

 the Orange Hawkweed, as the plants of the whole of this group are very 

 variable, but it presents striking differences which seem worth character- 

 izing. 



Besides the above there is another species of the same group, the KING 

 DEVIL, Hieracium prcealtum, Vill. (Noxious : Dom.), which is found with the 

 above but much more rarely and which is far less aggressive with us in 

 Canada, although it is bitterly complained of to the south of our borders ; 

 this is a much less leafy plant and bears fewer runners. The smaller flower 

 heads are borne in the same way but the corymb is smaller and more spread- 

 ing; the whole plant is less hairy, particularly the stems, and is glaucous. 

 This grayish green colour makes the dark bases of the long hairs on the leaves 

 stand out more conspicuously than on the allied species. 



The MOUSE-EAH HAWKWEED, Hieracium, Pilosella, L., has been intro- 

 duced into Prince Edward Island since many years and has taken almost en- 

 tire possession of some fields and extensive areas along the sides of the public 

 roads. It is even a worse pest than the different species mentioned above. 

 It is a mat-like prostrate plant, which produces long running leafy stems 

 on the surface of the ground ; these produce tufts of roots and side shoots 

 at very short intervals, the latter being densely clothed with clusters of 

 leaves, which are smooth above, except for some very conspicuous long white 

 bristles, and are covered beneath with a thick felt of star-shaped hairs. The 

 flower heads are solitary, on slender stalks, pale yellow, over an inch across 

 and sweetly scented. The seeds are a little longer than those of the Orange 

 Hawkweed, but the seeds of all the four Hawkweeds here mentioned are prac- 

 tically indistinguishable; all, however, are liable to occur in grass seeds of 

 which they are a dangerous impurity. The agricultural treatment for the 

 eradication of all is the same and consists mainly of a short rotation with 

 seeding down to clover and grass at short intervals. 



According to Dr. N. L. Britton (Flora of the Northern States and Can- 

 ada, 1901), the Prince Edward Island Mouse-ear Hawkweed is the variety 

 Peleferianum, Mer., of Hieracium Pilosella. The typical form of the species 

 is found occasionally in the other provinces, having been introduced with 

 European grass seeds. 



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