220 
XL vi. composite : cichoracEjE. [ Hieracium . 
dentate hairy or nearly glabrous narrowed into the petiole, cau- 
line ones large, involucre ventricose rounded or slightly trun- 
cate at the base black with soft velvety hairs and numerous 
setae, the scales broad acuminate adpressed floccose at the 
points outer ones lax, ligules nearly glabrous externally shortly 
pilose at the apex.” H. alpinum FI. Dan. t. 27. H. alpinum 
var. melanocephalum Fries. 
Rocky mountains; rare. Cairn-toul, Ben-na-bourd, and Loch- 
na-gar, Aberdeenshire. Canlochen Glen, Forfarshire. If.. 7, 8. 
“ Styles yellow or rather lurid, frequently clothed more or less densely 
with very minute dark hairs.” The above specific character, with 
some verbal alterations, is that given by Mr. Backhouse, as we are not 
quite certain what is meant by this and the next species: it appears 
to resemble H. alpinum, but with the ligules of H. nigrescens. 
6. H. globosum Backh. ( globose-headed H.) ; “ glaucous or 
green, stem one- or few-headed floccose slightly hairy, radical 
leaves ovate or ovato-spathulate sub-acute or obtuse entire or 
dentate glabrous above narrowed into petioles, buds globose, 
involucre rounded at the base ultimately spherical dark with 
short black-based hairs, its scales numerous linear attenuate 
acute adpressed, florets sub-glabrous externally glabrous or 
rather pilose at the apex, styles yellow.” 
Cairngorum and Braemar mountains, Aberdeenshire. Cairn-toul ; 
Ben-na-main, above Loch Aan; Ben-na-muicdhui; Little Craigindal. 
If.. 7, 8. — According to Mr. Backhouse this differs from the last 
species by the involucres globose before and after flowering, nearly 
destitute of setae, and by the linear attenuate acute scales. We fear 
that both, with many of those which follow, ought to be united. 
** Green. “ Stem frequently elongated and branched , with several heads:” Bab. 
Radical leaves with shaggy petioles ; cauline ones not amplexicaul. 
t Scales of involucre erect when in bud. 
7. H. nigrescens Willd. : radical leaves with slender petioles coarsely and irregu- 
larly dentate, involucre ovate at the base, scales broad outer ones obtuse, 
styles fuliginose. 
8. H. lingulatum Backh. ; radical leaves with short petioles denticulate or dentate, 
involucre broad at the base, scales attenuate acute, styles livid. 
ft Scales of involucre narrow , inflexed when in bud. 
9a. H. senescens Backh. ; radical leaves denticulate or remotely and irregularly 
dentate, involucre broadly ovate or turbinate at the base, scales acuminate. 
9b. H. atvatum Fries? ; radical leaves nearly entire or coarsely and almost regu- 
larly dentate, involucre urceolate or ovate at the base, scales acuminate. 
9. H. chrysanthum Backh. ; radical leaves sharply irregularly and deeply dentate ; 
involucre rounded at the base, scales acute. 
*** Green , viscid with copious glandular hairs. Stem elongated and branched , 
radical leaves with short winged not shaggy petioles ; cauline ones amplexicaul. 
10. H. amplexicaule L. ; scales of involucre lax. 
**** Glaucous green , not viscid. “ Stem usually lengthened Bab. Radical leaves 
with shaggy petioles , cauline ones more or less amplexicaul. 
11. H. cerinthoides L. ? ; stem with few leaves and few heads near the top, ligules 
pilose at the apex. 
12. H. Iricum Fries ; stem with 3 to 6 leaves corymbose at the top, ligules quite or 
almost glabrous at the apex. 
