120 CICHORACE.E. [CI. 10. 



the centre are fiosculous, those of the margin ligii- 



late? 



Exceptions to the above characters, of this most 

 natural and very extensive Class, occur in the two last 

 sections of the 55th Order, hereafter to be explained; 

 as also in Tussilago, several of whose species are in- 

 completety dioecious, and have disunited Anthers ; 

 in Eclipta, the Flowers, or Florets, of whose disk 

 are 4-cleft and tetrandrous; in Siegesbeckiafiosculosa, 

 where they are 3-cleft and triandrous ; and in Seri- 

 phium, as also in Stcehelina unrftosculosa, Prodr. Fl. 

 Grsee. v. 2. 162, which have only 1 Floret in each 

 Calyx. The occasionally undivided or club-shaped 

 Stigma is always, I believe, inefficient. 



Orel 53. Cichorace.e, fig. 57-60. " Florets all 

 ligulate and perfect, fig. 59. Common Calyx various. 

 Each Floret, entire or toothed at the apex, has a twin 

 Stigma. Seed either naked, or feathery, fig. 60. Re- 

 ceptacle either naked, fig. 58, or covered with hairs 

 or scales. Plants milky, herbaceous, often caulescent. 

 Leaves alternate. Flowers usually yellow." Schkuhr 

 has remarked that their Pollen is angular; in the 

 tubular Florets it is spherical or oval. Br. Tr. of 

 Linn. Soc. v. 12. 88. 



This Order is equivalent to the first Section of the 

 Syngenesia Polygamia-cequalis of Linnaeus, of which 

 Sonchus, Hieracium, Picris, fig. 57-60, Leontodon, 

 Tragopogon, and Cichorium are examples, nor can 

 any thing be more natural, 



