of the Class Composite. 251 



choracea. Its entire capitulum may be compared with that of 

 Gnaphalium, and its soft stipitate pappus with that of Lactuca, 

 thus showing that the genus is to be regarded as constituting an 

 osculant group between the three families. The modification of 

 the apex of the achenium proves that the stipitate pappus is not 

 a character of generic importance in Leria. 



Trib. 6. Diazeuxe;e. Receptaculum subpaleatum. Flosculi 

 (rar6 dioici !) disci hermaphroditi, tubulosi, 5-dentati ; radii 

 ligulati, foeminei, nunc bilabiati. Antheraricm setis nudis. 

 Planta sape fruticosa, capitulis plerumqiie solitariis, magnis, 

 pedunculatis. 



DiAZETTXIS. 



Atractylidis sp., L. 

 Onoseridis sp., Willd. 



Flores dioici ! Receptaculwn alveolatum. 



Flores dioici! Involucrum sphaeroideum, multiplici serie imbri- 

 catum : squamis innumeris, lanceolatis, acuminatis, coria- 

 ceis, rigidis, adpressis. Receptaculum alveolatum : alveolis 

 margine laciniato-fimbriatis. Flosculi masculi creberrimi, 

 cylindrico-tubulati, 5-nervii, limbo o-fidi : laciniis lineari- 

 bus, obtusis, canaliculatis, recurvato-patulis, nervis pro- 

 minentibus apice confluentibns, hinc margine apiceque 

 incrassatis : ligulis plurimis, accessoriis, patulis, substantid 

 coriaceis, obtus^ trilobis, 6-nerviis (nervis per paria lacini- 

 arum discum occupantibus, paribus intermediis magis ap- 

 proximatis) nunc neutris unilabiatis, nunc pistillo (an sterili ?) 

 staminum rudimentis, labioque interiore simplici, angustis- 

 simo, canaliculate, obtuso, binervio, coriaceo, recurvato, 

 basi dilatato auctis ; foeminei copiosissimi, filiformes, 5-ner- 

 vii, coriacei, basi callosd, difFormes ; centrales limbo requali, 



5-partito ; 



