82 
LACTUCA. 
554. 
L. virosa, Linn. 
Native. 
Germanic 
557. 
L. muralis, Lees. 
Prenanthes, Flora, 62. 
Native. 
English. 
SONCHUS. 
559. 
S. arvensis, Linn. 
Native. 
British. 
560. 
S. asper, Hoffm. Native. 
8. oleraceus , /3. Flora, 82. 
British. 
561. 
S. oleraceus, Linn. 
Native. 
British 
CREPIS. 
563. 
C. virens, Linn. 
C. tectorum, Flora, 62. 
Native. 
British. 
564. 
C. biennis, Linn. 
Native. 
English. 
Cultivated fields ; rare. Near Cleveland Lodge, Ayton ! — W. Mudd. 
Fields near Thorp Arch — 8. Hailstone. Is the species mentioned 
in the Flora under this name the true plant ? 
566. C. succisjefolia, Tausch. Native. Highland. 
Heseltine gill, near Settle — W. Borrer (Phyt. ii. 428). Bank of the 
Tees below Wince bridge, hedgebank between High Startforth and 
Lartington, and other places in Teesdale. 
567. C. PALUDosA, Mcench. Native. Scottish. 
Hieracium, Flora , 64. 
HIEEACIUM* 
568. H. pilosella, Linn. Native. British. 
569. H. aurantiacum, Linn. Alien. 
Naturalised near Settle — J. Backhouse, Jun. ; and in Wilton Woods, 
Cleveland — W. Mudd. 
576. H. Lawsoni, Smith. Native. Highland. 
Under this name I have included a plant which grows sparingly at 
* In this genus, I have slightly departed from the classification followed in the London Catalogue. 
The species which Britain produces want carefully working out hy watching the range of variation of the 
characters of each in its natural localities and under cultivation. The “ Symbol se ad Historiam Hieraci- 
orum ” of Fries has given a vivid impulse to the study of these plants, and it is hoped that we may he 
enabled, before long, to have the nomenclature of the British representatives of the genus settled upon 
a substantial and satisfactory basis. But at present, whilst undergoing the process of renovation, they 
are involved in a considerable amount of confusion. I have published specimens of most of the York- 
shire forms in the “ Hieracia of North Yorkshire and Teesdale.” 
