356 THE CANADIAN ENTOMOLOGIST. 



short, free or variously united ; anthers mostly elongate, basifixed ; flowers 

 usually actinomorphic throughout, but androecium sometimes zygomorphic; 

 gynoecium of distinct or variously united carpels ; flowers generally highly 

 coloured and conspicuous. 



To the Dilleniaceous type have been assigned five genera of the 

 Dilleniacese, five of the Elaeocarpacese, three of the Ochnaceje, and one 

 each of the Theacese, Bixaceje and Flacourtiacese. With the possible 

 exception of the Ericaceous type, it shows the widest range of form of any 

 group recognized ; furthermore, it is the best known ecologically, and it 

 is quite possible, or even probable, that its members are adapted to very 

 different modes of pollination. 



The Solanum-Cassia type may be characterized as follows : Perianth 

 usually quite large, mostly actinomorphic, segments campanulate or more 

 generally patejit or reflexed \n disposition; androecium of few members, 

 usually 5 or lo, very rarely as many as 15, staminodia sometimes present, 

 as reduced members of these numbers in zygomorphic forms, or more 

 rarely from a multi-staminate androecium ; filaments f/iuch reduced in 

 in le?igth ; anthers basifixed, oblong to sagittate or linear, often more or 

 less connivent around the filiform style with its small, generally simple 

 stigma, or at least erect, very rarely distant ; flowers generally conspicuous 

 and highly coloured. 



The members of this type show a remarkable uniformity of structure. 

 To it have been assigned 49 genera, as follows : Mayaca (Mayacacese), 

 Schoenocephaliutn, Stegolepes, Rapatea, Saxo-Fridericia, Cephalostemon, 

 Spatha7itlms (Rapateaceje), Cartojiema, Dichorisandra (Commelinacefe), 

 Monochoria (Pontederiacese), Waller ia, Agrostocrinum, Dianella, 

 Calectasia, Luzuriaga (Liliaceas), Cotianthera, Cyanella, Zephyra, 

 Tecophilcea (Amaryllidaceas), Cheiranthera (Pittosporaceae), Cassia, 

 Koompassia, Distemonanthus, Labichea, Dicorynia, Baudouinia, 

 Duparqnetia, Krameria, Martiusia (Leguminosae), Platytheca, 

 Tetratheca, Tremandra (Tremandracese), T/iomasia, Guichenatia, 

 Lysiosepalnm, Lasiopetalnm (Sterculiacese), Ouratea, Brackenridgea, 

 Godoya, Elvasia, Blastemonanthus, Wallacea, Schuiirmansia, Pcecilandra, 

 Luxembergia, Enthemis, Leitgebia (Ochnaccce), Stemonoportis, Mono- 

 porandra (Dipterocarpaceae), Kiggelaria (Flacourtiaceae), Begonia, 

 sections Solanthera and Parvibegonia (Begoniacese), Ardisia, sections 

 Icacorea, Stylogyne and Monoporus (Myrsinacese), Gardneria ( Logan i- 

 acese), Exacum, Cotylanthera (Gentianacese), Solannm, Cyphomandra 

 (Solanaceae), Argostemma and Strumpfia (Rubiacese). 



