76 BRITISH HIERACIA. 



23. H. EIOIDTIM. Witfiout root-leaves. Stem erect, rigid, 

 \ntli a Uafy Iranched corymbose panicle. Lea/oea ovate or ollong- 

 UnceoUte, denticulate or sub-dentate in the middle, rounded 

 and sessile, or slightly clasping at the base, sub-reticulate 

 beneath with prominent ascending veins^ nearly glabrous : 

 ioweimost attenuated into petioles. Involucres ovate at 

 the base, ultimately conical, with scattered hairs and setse. 

 Fhyllaries appressed, obtuse. Florets glabrous. 



H. rigidum. Fries, feymb. p. 173. Bab. Man. Ed. 3, p. 198. 

 M. eorymboavm. Bab. Man. Ed. S, p. 199. 



Mountain districts. Yorkshire side of the Tees between the 

 High Force and Winch Bridge, and many other stations in upper 

 Teesdale. Near the Kirktown of Clova. Glen Ariff, Co. Antrim. 



Flowers in 8th and 9th months. 



Plant S io 4 feet high, with numerous heads of medium 

 size. Stem firm, very rigid, usually purplish red especially in the 

 lower part ; glabrous, or slightly fldccose in ihe upper part ; more 

 or less densely leafy throughout, and forming a large, sometimes 

 aggregated, branched leafy panicled corymb. Leaves dull green, 

 paler or slightly glaucous beneath; glabrous, or with scattered 

 hairs on the underside, with very minute glands at the margins ; 

 usually denticulate, but sometimes with a few rather elongated 

 irregular sharp teeth near the middle : lowest ones obovate- 

 lanceolate, sub-acute, attenuated into winged petioles : inter- 

 mediate oblong- lanceolate, acute, narrowed to a more or less 

 clasping or rounded sessile base : upper ones broad, sub-acumi- 

 nate, half clasping, or sessile when at the base of the peduncles. 

 Branches of the corymb spreading or ascending, rather slender, 

 always rigid, scabrous ; very leafy, especially at the base. Pedim- 

 cles minutely glandular or floccose. Involucres deep or blackish 

 green, with scattered whitish brittle hairs, or gland-tipped setse. 



