806 



ligules ciliated J inner involucral scales bluntish, and tipped with white 

 pubescence. 



H. nigrescens, var. Ravine of the White Water, Clova mountains, 

 Forfarshire ; July. Styles livid ; ligules ciliated. 



H. nigrescens, Fries. Craig Wharral, Clova mountains ; July. 

 Mica. Styles darkly fulginose ; ligules ciliated. 



H. gracilentmn, Backhouse, Alpine var. H. melanocephalum and 

 H. gracilentumy Fries. Canlochen Glen, Forfarshire ; July, 1852. 

 Porphyry. 



H. insigne, Backhouse. Loch Ceanndin, Aberdeenshire ; August, 

 1852, Styles yellow J ligules ciliated; flower usually very large. 



H. affine, Backhouse. Near Loch Aan, Cairngorum mountains, 

 Aberdeenshire ; July, 1852. Granite. Styles yellow ; ligules cili- 

 ated ; involucral scales all linear, attenuate, acute. 



H, alpestre. Backhouse. Ben-na-Bourd, Aberdeenshire ; August. 

 Granite (3000 to 3500 feet). Styles yellow; ligules coarsely but not 

 densely ciliated ; inner scales acuminate, involucres broad-based. 



H. melanocephalum^ var. H. laiifolium, Backhouse. Corrie of 

 Clova, Forfarshire; September, 1852. Mica (2500 feet). Styles 

 livid ; ligules strongly ciliated. 



H. melanocephalum, var. H. latifolium, Backhouse. Lochnagar, 

 Aberdeenshire ; August. Granite (3000 to 3500 feet). Styles livid ; 

 ligules strongly ciliated. 



H. melanocephalum, Backhouse. Second flowering in 1852. Cul- 

 tivated two years. Roots from Scotland. Styles livid. 



H. melanocephalum, Backhouse. Cultivated two years. First 

 flowering in 1845. Root from Scotland. Styles livid. 



H. melanocephalum. Craig Maid, Clova mountains, Forfarshire : 

 July, 1852. Styles livid, more toothed in leaves when on harder rock 

 or mica. 



H. melanocephalum. Entire-leaved form. Craig Wharral, Clova 

 mountains, Forfarshire ; July, 1852. Mica. Styles livid. 



H. corymbosum, Fries. Clova, Forfarshire ; July, 1852. On 

 heathy hillocks. 



H. Norvegicum, Fries. Clova, Forfarshire; July, 1852. On 

 heathy hillocks. Styles yellow. 



H. argenteum. Fries. " Crag Chuloch," Aberdeenshire ; August. 

 Granite. Styles yellow. 



H. argenteum, Fries. Kilbo Corrie, Clova mountains ; July, 1852. 

 Mica (2000 to 2500 feet). Styles yellow ; ligules ciliated. 



H. argenteum, Fries. Clova, Forfarshire ; July. On heathy 



