HiERAciuM. COMPOSITE. 475 



Receptacle scrobiculate, or slightly alveolate-fimbrillate. Achenia ob- 

 long or columnar, oCien subclavate, rarely fusiform, striate or ribbed, 

 not rostrate. Pappus consisting of a single series of persistent but very 

 fragile denticulate-scabrous bristles, brownish-white or fuscous. — Per- 

 ennial herbs (chiefly of the northern hemisphere) ; with entire or toothed 

 leaves, many of the European species stoloniferous; the softer pubescence 

 often stellate; the bristly hairs frequently glandular or denticulate. Flowers 

 yellow, very rarely orange or white. 



§ 1. Involucre imbricated: achenia usually tapering towards the base, hut 

 never towards the summit {heads commonly rather large.) — Euhieracium. 



1. H. alpinum (Linn.) : stem bearing about a single leaf and a solitary 

 ventricose head ; leaves oblong-lanceolate, entire or somewhat toothed, bear- 

 ing both villous and glandular hairs ; scales of the involucre rather loose, 

 villous ; llgules pubescent externally. — Engl. bot. t. 1119 ; Frcel. ! in DC. 

 prodr. 7. p. 208. 



Greenland ! {v. sp. in herb. Greene.) — The H. pusillum, Pursh ! {fl. 2. p. 

 602), which this author suggests may be only a diminutive variety of H. 

 alpinum, and which is therefore referred to that species by E. Meyer, &c., 

 proves, on examination of the authentic specimen in herb. Lamb, (from herb. 

 Dickson) to be Erigeron alpinum ! 



2. H. vulgatum (Fries) : stem erect, somewhat flexuous, naked above, 

 corymbose at the summit; leaves lanceolate, attenuate at both ends, coarsely 

 [or obscurely] toothed, entire towards the apex, petioled, villous; involucre 

 obtuse, hirsute and glanduliferous; pappus nearly white. Frcel. in DC. — 

 Fries, novit. Suec. ed. 2. p. 259. (H. sylvaticum, Fl. Dan. t. _ 1113, (not of 

 Linn., Wahl. S^-c.) and H. murorum a, Linn, in part, fide Fries, I. c.) H. 

 niolle, Pursh ! fl. 2. p. 503, not u( Jacq. H. sylvaticum, Schlecht. in Linneea, 

 10. p. 87 ,• Hook. fl. Bor.-Am, 1. p. 299 ? 



Greenland, Fries. Labrador, Kohlmeister! Henne, ex Schlecht. Point 

 Levi, Lower Canada, Mrs. Sheppard, ex Hook, (if we have correctly refer- 

 red the synonym.) — A variable species, allied to H. sylvaticum and H. 

 murorum, with the heads resembling in size and form those of H. moUe 

 (Crepis hieracioides, Waldst. 6^- Kit.), for which Pursh mistook it. 



3. H. prenanthoides (Vill.) : stem simple, strict, leafy, corymbose at the 

 summit; leaves membranaceous, denticulate, ciliate, reticulated and glau- 

 cous beneath; the cauline oblong-lanceolate, clasping ; the lower narrowed 

 and auriculate at the base; the peduncles and obions; heads glandular-hir- 

 sute. Fral. in DC. I. c.— Vill. Delph. 3. p. 108, S^-voy. p. 58, t. 3, /. 3 ; 

 Fries, novit. Suec. ed. 2. p. 2G1. 



Greenland, Fries. (A stouter variety, not glaucous, and hairy throughout.) 

 — Leaves varying from cordate to ovate-oblong, lanceolate, and Ungulate, 

 always acute. Fries. 



4. H. Canadense (Michx.): stem erect, simple or sparingly branched 

 above, leafy; leaves sessile, lanceolate or ovate-oblong, acute, sparingly pu- 

 bescent or hairy, especially on the midrib and veins beneath, or nearly gla- 

 brous, scabrous-ciliolate, re^motely and often iucisely dentate with a few sharp 

 and spreading or divaricate tfclh; the upper obtuse at the base, often some- 

 what auriculate and partly clasping; heads (showy) corymbose ; involucre 

 somewhat glabrous; the exterior subulate scales mostly spreading in fruit, 

 the others appressed; receptacle somewhat alveolate, fiinbrillate-toothed. — 

 Michx..' fl. 2. p. 86; Monnier! ess. Hier, p. 37. H. virgatum, fasciculatuin, 



