Hieracmm,-\ COMPOSURE. 297 



8. CICHORIUM. Linn. 



Involucri foliola diiplici serie, Receptaciilum subpaleaceum. Achenium erostre, turbin- 

 atum, conforme. Pappus brevis, biserialis, pilis paleaceis ellipticis obtusis. 



1. C. Intybus; flonbus gemlnatis subsessilibus, foliis uncinatis. — Linn, Sp. PL p, 1142. 

 Engl. BoL t 539. 



Had. Canada. Mrs. Percival Mrs, Sheppard. — Introduced from Europe. 



9. CREPIS. Linn. 



Involucri foliola tluplici serie, externa laxa, brevia. Receptaculum niulum. Achenium 

 teres, sensim in rostrum breve attenuatum. Pappus plunserialis, albus, mollissimus. 



1. C, biennis; caule elato sulcato, foliis radicalibus obovato-lanccolatis plerumque run- 

 cinato-dentatis seu pinnatifidis summis lanceclatis, involucre subscabro pubescente. — Linn, 

 Sp. PI. p* 1136. EtigL Bat t 149. — /3, foliis latioribus plerumque runcinato-dcntatis rarius 

 pinnatifidis nunc omnino integerrimis. 



Hab. /3. Carlton House, on the Saskatchawau, to tlie Prairies on the Rocky Mountains. Drummond. 

 Lake Huron. Dr. Torfrf.— The radical leaves of this are invaiiably wider than ia any specimens I have 

 seen of the Europrean C. biennisj and more entire; yet I dare not venture to consider it a diflferent species. 



2. Celegans; humilis glaberrima, radice multicipite, caulibus erectis dichotorais multi- 

 floris, foliis inferioribus spathulatis superioribus linearibus, involiicris cylindraceis, acheniis 

 tenuissime rostratis. 



Hab. " Battures" of the Assinaboyne River. Drwmmonrf.— Allied to the following:, but unquestionably 

 distinct. The stems are numerous from the summit of the fusiform root, 5-6 inches high, dichotomous and 

 leafy, the leaves gradually narrower upwards. 



3. C. nana; humillima glaberrima, caulibus subnullis, foliis ovatis subrotundatisve longe 

 petiolatis Acres superantibus, involucris cylindraceis, acheniis in rostrum attenuatis.— «. foliis 

 ovatis acutiusculis integris.— C. nana. Rich, in FrankL \st Journ. ed, 2. App. p. 29. Hooh. 

 in Parry's 2d Voy. App. p. 397. 1 1.—^. foliis subrotundatis plerumque lyrato-pinnatifidis. 



Hab. *. Barren pounds from lat 64° to the Arctic Seaand Ishnds. Dr. Richardson. Capt Sir E. Parnj. 

 — /3. On the slaty debris of the Rocky Mountains. D/M/n/nonrf.— The alpine specimens have the leaves usually 

 rounder and pinnatifid. 



10. HIERACIUM. Linn. 



Invohicnm imbricatum, ovatum. Receptaculum nudum, punctatum seu pilosum. 

 Pappus uniserialis, pilosus, SEepissime sordide fiavescens. Achenium erostre, sulcatum. 



1. H. pusillum; pusillum villosissimum, caule simplici erecto unifloro remote subfolialo, 

 foliis lanceolatis attenuatis acutis integerrimis caulinis linearibus, calyce villosissimo. Pursh, 

 FL Am. V. 2. p. 502. 



Hab Labrador. KoMmeister. {Pursh.)-" A very small plant, with flowers the size of a daisy. It 

 strongly resembles H. alpinum, and is probably only a diminutive var. of it." 



2 H venosum ; scape nudo corymboso-paniculato glabro, pedicellis filiformibus, foliis 

 obovato-lanceolatis supra rariter pilosis subtusnudis margine ciliatis glanduloso-dcnticulatis, 



2 P 

 VOL. I. '^ 



