139 



also by its coarsely and irregularly-toothed lanceolate leaves, black- 

 based, shorter pubescence, and greater stature." An unknown or 

 unascertained species was found on Ben-na-Bourd and in the ravine 

 of the Garachary, on granite ; it " differs from the character of H. 

 glanduliferum of Fries mainly in having the ligules more or less cili- 

 ated. Great stress is laid by Fries on the glabrous ligules of his H. 

 glanduliferum, and that plant is therefore removed by him into a sec- 

 tion of the genus remote from H. alpinum. The present plant differs 

 from H. alpinum in having a globose or subglobose involucre, short, 

 broad-hased, acuminate scales, and ifl being destitute of the subfolia- 

 ceous outer scales ; also in its shorter, semi-glabrous, broadly toothed, 

 somewhat pointed leaves, and in the profusion of glandular black 

 hairs on the stem. It differs from H. melauocephalum in its much 

 smaller size, short, broad-based, and not attenuated involucral scales, 

 and in the form and toothing of the leaves." A second species, which 

 the author does not name, was found on Lochnagar, on granite ; it is 

 " allied to H. melauocephalum, but distinguishable at first sight by 

 its branched scape, much larger heads, and obovate-laxiceoioXQ leaves, 

 which are more regularly toothed, and narrowed into a long, some- 

 times dilated petiole." H. atratum was found in a number of stations, 

 on granite, " maintaining the same characters everywhere. On Ben- 

 na-bourd and Lochnagar the plant was often branched, and when this 

 occurred the heads were much smaller. Involucre urceolate ; scales 

 linear-attenuate and black with glandular pubescence; heads 1 or 2; 

 Yoot-lesives few,^'' H. nigrescens of Fries occurred in the " ravine of 

 the White Water and Canlochen Glen, on hornblende ? it differs 

 from the preceding in having broad-based, acuminate, subobtuse 

 outer involucral scales, densely clothed with black glands and sq/'t 

 white hairs; in the stem bearing 1 or several heads, and in the 

 densely-tufted leaves being never or very rarely glabrous." H. rupes- 

 tre of Allioni, Koch, and Fries, a species new to the British flora, was 

 found on the granite of Cairntoul. Of this plant the author gives 

 the following description: — "Stem bearing root-leaves, scape-like, 

 1 -headed, simply branched, or divided from the base into long 

 ascending peduncles. Root-leaves ovate, linear-subulate, or elongate- 

 lanceolate, with irregular, attenuate, acute teeth ; nearly glabrous 

 above, clothed with scattered white hairs beneath, and narrowed into 

 long, silky, shaggy footstalks. Stem-leaves (when present) linear- 

 lanceolate or reduced to subulate bracts. Peduncles slightly thick- 

 ened upwards, clothed with stellate pubescence interspersed with 

 black glandular hairs. Involucral scales numerous, very attenuate, 

 clothed with black glands and soft white hairs ; heads rather large 



