DICOTYLEDONS. COMPOSITE. Hteracium. 235 



5. PRENANTHES. 



Involucre with scales at the base. Receptacle naked. Pappus 

 simple, sessile. Florets few. 



]. Pr. muralis, florets 5, leaves lyrato-pinnatifid and toothed, the 

 terminal lobe with about 5 angles, p. 227. Walls, &c. 



6. LEONTODON. 



Involucre imbricated with scales that are frequently lax and flaccid. 

 Receptacle naked. Pappus simple, stipitate. 



1. L. Taraxacum, outer scales of the involucre rcflexed, leaves 

 runcinate glabrous toothed, p. 227 Pastures. 



2. L. palustre, outer scales of the involucre erect appressed, leaves 

 sinuato-dentate nearly glabrous, p. 227. Marshes* 



7. APARGIA. 



Involucre imbricated, with scales at the base. Receptacle naked, 

 dotted. Pappus feathery, sessile, unequal. 



1. A. hispida, scape single-flowered, leaves dentate scabrous, flo- 

 rets hairy at their orifice glandular atthetip.p.228. Meadows. 



2. A. hirta, scape single-flowered, leaves dentate scabrous, invo- 

 lucre nearly glabrous, outer pericarps with a scaly pappus. 

 p. 228. Dry pastures. 



3. A. Taraxaci, scape single-flowered thickened upwards, leaves 

 glabrous runcinato-dentate, involucre very hairy, p. 228. 

 Mountains. 



4. A. autumnalis, scape branched scaly upwards, leaves lanceolate 

 toothed or pinnatind subglabrous, peduncles swelling beneath 

 the involucre, p. 228. Pastures. 



8. HIERACIUM. 



Involucre ovate, imbricated. Receptacle nearly naked, dotted. 

 Pappus simple, sessile. 



* Scape naked (or rarely with one leaf), singled/lowered, 



1. H. alpinum, scape 1-flowered, leaflets hairy as well as the 

 oblongo-lanceolate entire leaves, involucre thickly covered all 

 over with long silky hairs, p. 228. Rocks or mountains. 



2. H. Halleri, scape 1-flowered with 1 or rarely 2 leaves hairy 

 as well as the spathulato-lanceolate toothed leaves, involucre 

 with rather long silky hairs principally near the margins of the 

 scales, p. 229. Mountains. 



3. H. Pilosella, scape 1-flowered naked, leaves entire elliptico- 

 lanceolate hairy downy beneath, scions creeping.p. 229. Banks. 



** Scape naked (or rarely with a single leaf), many -flowered. 

 4.H.dulium, scape many-flowered naked (or with one small leaf), 



