THE HIGH ALPINE FLORA OF BRITAIN 243 



1067 m. (E. G. Baker, 1893). Loch-na-gar (Backhouse, 1855), 

 Cairn Gorm from 915 to 1067 m. (E. S. Marshall, 1898), these 

 also in Herb. Brit. Corrie Ardran, on Ben Ein, at 1000 m. (E. S. 

 Marshall, as H. holosericeum). Loch-na-gar (herb. Syme, but 

 wrongly labelled melanocephalniii). 



Var. melanocephalum, Zahn. Ascends to 1190 m. near the 

 summit of Ben-na-Bourd (Backhouse, 1851, in herb. Watson). 



2. Hieradum Halleri, Vill. Cairn Gorm, above 915 m. (E. S. 

 Marshall, 1898, n. 2160, in Herb. Brit.) 



Var. calenduliflorum, Williams, " Prodr. Fl. Brit." 99. This grows 

 on grassy slopes and rocky ledges at from 780 to 1200 m. It 

 occurs sparingly on the mica slate, and more abundantly on the 

 granite. According to Backhouse, it is " abundant on the granite 

 precipices of Dhu Loch and Loch-na-gar, and scattered among the 

 grass over the region lying between the ridge of Loch-na-gar and the 

 northern part of the Clova district." The drawing in Mr. Hanbury's 

 unfinished monograph, p. 23, t. 9, is from a Dhu Loch example. 



3. Hieradum nigrescens, var. gradient um, Hook. f. Corrie 

 Etchachan, Banffshire, on the north slope of Ben Macdhui, 1884 

 (Linton fratt. in"Journ. Bot." 1893, 145; E. S. Marshall, 1898, in 

 Herb. Brit.). Loch-na-gar, from 915 to 1067 m. (E. G. Baker, 

 1893, m Herb. Brit.) It occurs on grassy slopes and rocky 

 ledges of granitic and porphyritic cliffs up to nearly 1200 metres also 

 in Aberdeenshire, as on Ben-na-Bourd (Backhouse, 1855, in 

 Herb. Brit). 



Var. gradlifolium, Hanbury, in "Journ. Bot." 1892, 166. 

 This is the usual form assumed by H. nigrescens throughout the 

 Breadalbane range ; especially on rocks above Loch-na-Chait, Ben 

 Lawers (Linton fratt. in "Journ. Bot." 1893, T 46; White, " Fl. 

 Perthsh." 195). Hooker f. ("Student's Flora," ed. 3, p. 233) says 

 of this species that it "ascends to 4500 feet,"- but there is no 

 Scottish mountain that attains this altitude. 



4. Hieradum globosum, Backh. Corrie Etchachan, Banffshire, 

 on the north slope of Ben Macdhui, in crevices of the granite cliffs, 

 1897 (Linton, Hier. exs. n. 54). 



5. Hieradum petiolatum, Elfstrand. Corrie Etchachan, Banff- 

 shire (Linton, Hier. exs. n. 53), Cairn Gorm, from 915 to 1070 m. 

 (E. S. Marshall and W. A. Shoolbred, 1898, in Herb. Brit). 



Var. dliatidens, Elfstrand. Cairn Gorm, at 1000 m. (E. S. 

 Marshall, 1898, in Herb. Brit). No other Scottish locality re- 

 corded for this variety, which is not mentioned in the late Mr. 

 W. R. Linton's "British Hieracia," 15 (1905). 



6. Hieradum Backhousei, Hanbury. First collected by Messrs. 

 Hanbury and Marshall in 1886, near the Dhu Loch, in Aberdeenshire, 

 along the broad bed, formed by flat shelving rocks, of the burn 



