»* BRITISH HIEEACIA. 



One of our handsomest species, easily distinguishable at all 

 times from H. eximiwm (to which it is most nearly allied) by its 

 larger, darker, less shaggy heads, and broadly ovate-spathulate 

 obtuse root-leaves. The stem of H. calenduUJlorum is also usually 

 shorter and less hairy, but more j&equently occurs branched. These 

 characteristics, appearing to be permanent under eultivation (plants 

 raised from seed presenting the same appearance), combined with 

 the circumstance that H. cahnchdiflorum occurs in typical form on 

 the mica slate, where it is rare, and H. esoimium abounds ; and also 

 on the granite where the former is abundant, and the typical form of 

 H. eximivm is very scarce, induces me to regard it as a true species. 



b. NIGEESCEITTES. 



Invohicres villous or hai/ry ; in most of the species with dark hairs 

 and setse. PJiyllwries aji^ressed, or few outermost lax. Florets 

 nearh/ or quite destitute of hairs externally, shortly pilose or 

 suh-glahrous at the tips. 



7. H. GRACILEHTUM:. Green, Stem, leafy, one or few headed, 

 witli short hairs, floccose, setose. Root-leaves lanceolate 

 or oblong-spathulate, sub-obtuse, remotely dentate, hairy 

 or nearly glabrous, narrowed into petioles. Stem-leaves 

 large. Imolmres ventricose, rounded or slightly turbinate 

 at the base, Hack with soft velvety hairs and setce. Phyllaries 

 broad, acuminate, appressed, floccose at the points; outer 

 ones lax. Florets nearly glabrous externally, slightly pilose 

 at the tips. 



S. mlpinum var. melanoeephalum. Fries, Symb. p. 70 (not of 

 Bab. Man. ed. 3, p. 45, nor of Hook and Arn. ed. 7, p. 219.) 

 J?", aljpinum. Flora Danica, t. 27. 



