COMPOSITE. 189 



spherical at the base ; phyllaries rather few, rather broad, acute, 

 dark-olive, rather thickly clothed with gland-tipped hairs, inter- 

 mixed with simple black-based hairs and a little stellate down. 

 Florets glabrous, ciliated at the apex. Styles yellow. Plant 

 dark-green. 



On rocky margins of alpine streamlets, at an elevation of 

 1,500 to 2,500 feet. Rare. Side of the stream issuing from the 

 Corrie of Ben-na-bourd and eastern side of Cairntowl, Braemar. 



Scotland. Perennial. Autumn. 



Stem 15 to 21) inches high, the leaves resembling in shape 

 those of H. argenteum, but broader and shorter, much more 

 strongly toothed, with the teeth pointing outwards or forwards, on 

 longer and more distinct petioles, and not at all glaucous. Anthodes 

 smaller than in H. argenteum, on shorter peduncles. Phyllaries 

 with much less stellate down and Avith the points more acute. 



H. nitidum appears to approximate most nearly to H. pallidum, 

 differing in the more strongly toothed and narrower dark-green 

 leaves, acute at each end, scarcely ciliated at the margins. Fries 

 quotes it doubtfully under H. pallidum, as a form of persicifolium. 



Mr. Backhouse gives as one of the characters, that the peduncles 

 are scaly ; but in two specimens from Ben-na-bourd with which I 

 have been favoured by that gentleman, these are no more so than 

 in many specimens of H. pallidum and H. argenteum, and less so 

 than in H. cinarescens and H. Gibsoni. In fact in this group 

 the presence or absence of small scale-like bracts on the peduncles 

 appears to be of very little value as a specific character. 



Scaly -stalked Sawkweed. 



SPECIES XXII.— HI ERA CIUM AGGREGATUM. Back. 



Plate DCCCXLV. 



Back. Mon. Hier. p. 52. Bah. Man. Brit. Bot. ed. v. p. 205. ITook. & Am. Brit. Fl. 

 ed. viiL p. 228. 



Stem scape-like, sub-umbellately branched at the apex, sparingly 

 clothed with stellate down, without simple or gland-tipped hairs 

 even on the peduncles. Badical leaves ovate-elliptical, abruptly 

 contracted at the base into short woolly petioles, subacute, the 

 outer ones obtuse, coarsely dentate on the lower half and often 

 with a few very large slender teeth at the very base, glabrous 

 above, frequently with scattered rather soft woolly hairs beneath 

 and on the margins ; stem Icatless or with a single small sub- 

 sessile leaf clothed with stellate down beneath, unless the leaf is 



