SYNGENESIA. 223 



One foot to two feet high, slender, erect, rigid, branched. F owers in 

 loose panicles, beautiful, yellow, tipped, before expansion, with 

 red. Anthers red. 



11. H. elodes (Marsh St. John's-worJ), styles 3, cal. with 

 (reddish) glandular serratures glabrous, leaves roundish pube- 

 scent, stem rounded creeping. Utghtf.pl 419. E. B. t. 109. 



HAS. Bogs, but not common. Islay, Sir Joseph Banks. Ditch by 

 the road-side between Newton-Stewart and Glenluce, in Wigton- 

 shire, about 6 miles from Glenluce, Maugh. At Loch Ransay, 

 and along the valley to Brodic in Arran, Mr. Murray. Fl. July, 

 Aug. I/. 



A span long. Flowers few, panicled, terminal, pale yellow. 



XIX. SYNGENESIA. 



1. POLYGAMIA 



* SEMIFL.OSCULOSI. Corollas all ligulate. (Ciclioracece , Juss.) 



10. HYPOCH^:RIS. Involucre oblong, imbricated. Receptacle 



chaffy. Pappus feathery, stipitate, or sessile. 

 12. CICHORIUM. Involucre surrounded with scales or smaller 



leaflets. Receptacle naked or slightly hairy. Pappus sessile, 



scaly, shorter than the pericarp. 

 9. CRKPIS. fyvolucre surrounded with deciduous scales and at 



length swelling into protuberances. Receptacle roughish. 



Pappus sessile. 

 8. HIERACIUM. Involucre ovate, imbricated. Receptacle nearly 



naked, dotted. Pappus simple, sessile. 

 7. APARGIA. Involucre imbricated, with scales at the base. 



Receptacle naked, dotted. Pappus feathery, sessile, unequal. 



2. PICRIS. Cal. double, the inner equal, the outer lax. Re- 

 ceptacle naked. Pappus feathery. Pericarps transversely 

 striated. (Picris and Helminthia, Decand.) 



1. TRAGOPOGON* Involucre simple, of many leaves. Recep- 



tacle naked. Pappus feathery, stipitate. Pericarps longitudi- 



nally striated. 

 6. LEONTODON. Involucre imbricated with scales that are fre- 



quently lax and flaxid. Receptacle naked. Pappus simple, 



stipitate. 



4. LACTUCA. Involucre imbricated, cylindrical ; its scales with 

 a membranous margin. Receptacle naked. Pappus simple, 

 stipitate. 



5. PRENANTHES. Involucre with scales at the base. Recepta- 

 cle naked. Pappus simple, sessile. Florets few. 



3. iSoNCHUs. Involucre imbricated, swelling at the base. Re" 

 ceplacle naked. Pappus simple, sessile. 



