288 SYNGENESIA— ;eqUALIS. [Tragopogon. 



border. Receptacle naked. Itnohicre liemisphaorical or nearly 

 flat, the scales imbricated, membranaceous at their margins, — 

 Named from its resemblance to the 'xueidoov, of Dioscorides, so 

 called from ■x\jo,Jire, on account of its acrid roots. 



43. Matricaria. Pappus 0. Receptacle naked. Involucre 

 hemisphserical or nearly flat, the scales imbricated, obtiise, not 

 membranaceous at their margins. — Named from its reputed 

 medicinal virtues. 



44. Anthemis. Pappus a membranaceous border, or 0. Re- 

 ceptacle convex, chaffy. Involucre hemispliEerical or nearly plane, 

 the scales imbricated, membranaceous at their margins. — Named 

 — uv&ilMOv, ?L flower, from the profusion of its blossoms. 



43. AcHiLL/EA. Pappus 0. Receptacle flat, chaffy. Involu- 

 cre ovate, imbricated. Florets of the ray 5 — 10, roundish or 

 obcordate. — So named because its healing virtues were said to 

 be first discovered by Achilles. 



(See Bidens, Artemisia, Tanacetum, in Ord. jEqualis. Div. ***.) 



ORD. III. FRUSTRANEA. 



Florets of the disk perfect and fertile ; those of the circumference 

 neuter; all tubular. (^Part of CltiAROCEPHXijJE, Juss.) 



46. Centaurea. Pappus pilose, or 0. Receptacle bristly. 

 Involucre imbricated. Florets of the ?y/?/ narrow, funnel-shaped, 

 irregular, longer than those of the disk (sometimes wanting). — 

 So named, because with this plant it is said the Centaur Chiron 

 cured himself of a wound received in the foot from Hercules. 



(See Anthemis Cottda, in Ord. Superflua). 



SYNGENESIA— ^QUALIS. 



1. Tragopogon. Linn. Goat's-beard. 



1. T. prutensis, L. (jjelloiv Goa(s-heard f) involucre about as 

 long as the corollas, leaves undivided glabrous acuminated 

 channelled, peduncles cylindrical. E. BoL t. 434. — /S. involucre 

 longer than the corollas, peduncle slightly thickened upwards. 

 T. major, Jacq. 



Meadows and pastures. Scotland. Ireland. Fl. June. $. — 1—2 

 ft. high. Flowers yellow, closing every day before noon ; head oi fruit 

 large. Pappus very feathery, elevated on a long stalk. 



2. T, *porrif6lius, L. {jpurple Goa( s-heard or Sahafj') ; invo- 

 lucre much longer than the corollas, leaves undivided straight, 

 peduncles thickened upwards, E. Bat. t. 638. 



Moist meadows in several parts of England ; but very local. About 

 Glasgow. Fl. May, June. 14. — 3—4 feet high. Flowers large, purple, 

 closing before noon, or in rainy weather. The root was formerly culti- 

 vated for culinary purposes. 



