805 



»■ 

 prove true species. Mr. Backhouse thinks that H. chrysanthum, 

 H. globosum, H. alpestre, and H. argenteum will prove to be good 

 species, but that there is some doubt regarding H. affine, H. gracilen- 

 tum, and H. insigne. Some of those near H. alpinum look more dis- 

 tinct when growing than when pressed; and the cultivated examples 

 of H. alpinum and H. melanocephalum go far to confirm the view 

 that they are distinct species. Considerable importance, he thinks, 

 may be attached to the colour of the style. Of the whole Hieracia 

 (fifty or sixty) Mr. Backhouse has growing specimens, carefully named 

 and numbered ; and he means to record the results of cultivation. 

 The following is a list of the specimens shown : — 



Hieracium tridentatum. One mile below Clova, Forfarshire j 

 July, 185*2. Styles yellow ; ligules glabrous. 



H. Lawsoni. Winch Bridge, Teesdale ; June, 1852. 



H. pallescens {H. scapigerum, Fries). Falcon Glints, Teesdale; 

 June. Styles yellow ; ligules glabrous. 



H. alpinutn. Stein never branching ; cultivated several years. 

 Styles always pure yellow. Does not flower twice a year. 



H. alpinum. Lochnagar, Aberdeenshire ; July. CJranite. Styles 

 yellow ; ligules strongly ciliated ; outer scales blunt and subfoliaceous, 

 inner linear, attenuate. 



H. alpinum. Canlochon Glen, Forfarshire; July. Styles yellow ; 

 ligules strongly ciliated ; outer scales blunt. 



H. chrysanthum, Backhouse. Cultivated two years. Roots from 

 Scotland. Styles and florets golden yellow, very handsome. 



H. chrysanthum, Backhouse, var. H. rupestre, Bab. Man. Cairn- 

 toul, Aberdeenshire ; Aiigust. Styles and florets golden yellow ; 

 ligules slightly ciliated. 



H. chrysanthum. Backhouse Falls of the Feula, Glen Dole, Clova 

 mountains, Forfarshire ; July. Mica. Styles and florets deep golden 

 yellow ; ligules slightly ciliated. 



H. rupestre, Bab., seems to be a pale, luxuriant variety of this 

 plant. The above is branched when strong. 



H. ccesium. Fries. Craig Wharral, Clova mountains, Forfarshire. 

 Mica. Styles livid ; ligules glabrous. July, 1852. 



H. nigrescens, Fries. Cairntoul, Aberdeenshire ; July. Granite. 

 Styles fulginose ; ligules ciliated. 



H. nigrescens, Fries. Corrie of Clova, Forfarshire ; July. Mica. 

 Typical form. Styles fulginose, &c. 



H. nigrescens, Fries. Ravine of the White Water, Clova moun- 

 tains, Forfarshire ; July. Mica. Heads typical ; styles fulginose ; 



