Keys to supertribes in Asteroideae

(presented on the basis of Robinson's description and modified to include new taxa)

1a. Phytomelanin usually present in achene walls ............................................................................................... supertrib. Ambrosiodae

1b. Phytomelanin absent in achene walls.................................................................................................................................................2

2a. Achene walls lack raphids, involucral bracts subvalvate................................................................................................supertrib. Senecionodae

2b. Achene walls usually with raphids, involucral bracts mostly gradate...............................................................................................3

3a. Phyllaries with hyaline or membranous margins ......................................................................................... supertrib. Anthemidodae

3b. Phyllaries not as above .......................................................................................................................................................................4

4a. Pappi absent, anther caudate at base.............................................................................................................. supertrib. Calendulodae

4b. Pappi present or absent, anther obtuse at base .................................................................................................... supertrib. Asterodae