Crepis.] SYNGENESIA — ^QUALIS. 283 



CLASS XIX. SYNGENESIA.^ Anthers united into 

 a tube. Fhicers compound. — (Nat. Ord. CoMPosiTiE, Juss.) 



ORD. I. .^QUALIS. All the florets perfect. 



* All the Corollas ligulate or strap-shaped. (Cichorace^, Juss. 



Endive Tribe.) 



1. Tragopogox. i^n«'^ longitudinally striated, beaked. Pappus 

 feathery. Receptacle naked. Involucre simple, of several scales. 

 — Name — r^ayoi, ci goat, and ':ray'jy), a heard ; from the beauti- 

 fully bearded fruit. 



2. HELMfxTHiA, F/'MiV transversely striated, beaked. Pappus 

 feathery. Receptacle naked. Involucre double ; inner of 8 close 

 scales, outer of 4 (or 5) large, lax, leafy ones. — Name ; £A,a/vj, 

 i7.>Mi\doz, a icorm, and 6r,7.ri, a case ; from the form of the fruit. 



3. PiCRis. Pruit transversely striated without a beak. Pappus 

 with the inner hairs feathery. Rcceptaclenaked. Rivolucre of many 

 compact, upright, equal scales, with several small lax, linear ones. 

 — Name, --r/.pog, bitter, as are many of this tribe. 



4. Apargia. Pruit beaked. Pappus feathery. Receptacle 

 naked. Involucre unequally imbx'icated, with hirsute black scales. 

 — Name of uncertain origin. 



5. Thrincia. Pridt tapering into a beak. Pappus of the 

 florets within the leaves of the involucre forming a short scaly 

 cup ; of the rest long, feathery. Receptacle naked. Involucre 

 imbricated. — Named from '^^ir/.o:, a feather, in allusion to the 

 feathery pappus. 



6. Hypocij{eris. Fruit striated, often beaked. Pappus 

 feathery. Receptacle chaflFy. Involucre oblong, imbricated — 

 Name from \j~o,for, and %t,/sos, a hog, the roots being eaten by 

 that animal. 



7. Lactuca. Fruit with a long beak. Pappus pilose. Re- 

 ceptacle naked. Involucre imbricated, cylindrical, few-flowered ; 

 its scales with a membranous margin. — Named from Lac, milk, 

 which flows from this and many plants of the tribe when broken. 



8. Crepis, Print narrower upwards, striated. Pappus pilose, 

 copious, soft, mostly white, deciduous. Receptacle naked. In- 



1 This is an extensive and most natural Class, corresponding with the Com- 

 posite; of the Nat. Arrangement, (the curious genus Xanthium being alone 

 excluded.) In all the species, the Jioiverstalk is enlarged at the summit into a 

 receptacle, which bears a great number of distinct, but closely placed, small 

 Jioicers or florets, surrounded by a many-leaved involucre, so that the whole 

 looks like one flower. Kach floret lias an inferior germen, the upper part fre- 

 quently expanding into a hairy or feathery cah/.v called a pappus, and becom- 

 ing a l-seeded fruit, (achenium.) The corolla is of one petal, either tubular or 

 ligulate. Stamens 6. Style single. Sligma bifid. 



