\ 



182 



MISSOURI BOTANICAL GARDEN 



c 



form 



a in 



j. ^ - — ~j, v , 



be easily increased or decreased by including 

 which the lateral slits first open more widely at the tip, or 

 including all those in which the pores are finally supple- 

 mented by lateral slits at length continued more or less down 

 the side. The number of genera as I have limited it is, I 

 feel confident, approximately right so far as may bo deter- 

 mined from systematic literature and the examination of 

 herbarium material. 



To the Solanum-Cassia type I have assigned 59 genera. 

 Of these, 19 are Monocotyledons and 40 Dicotyledons. The 

 Monocotyledons are: Mayaca (Mayacaceae), Schoenoce- 



phalium, Stegolepis, Rapatea, Saxo-Fridcricia, Cephalos- 



lemon, Spathanthus (Rapateaceae), Carlonema, Bichori- 

 sandra (Commelinaceae), Monochorea (Pontederiaceae), 



Am 



D 



aga ( 



Co 



(A 



Oy 



Calectasia, L 



'la, Zenhvra. 



Teco- 



The Dicotyledons are : Chei 



(Pittosporaceae), Cassia, Koomnassia, B 



(hits, Lai 



JTrameria, 



b 



n i a , Da 



D 



(Leguminosae), Platyth 



Tetra- 



theca, Tremandra (Tremandraceae), Thomasia, G 



ysiosepalum, Last ope talum (Sterculiaceae), < 



lea, B 

 Wallad 



mridgea, Godoya, Elvasia 



Sell it urmansia , Poecila ndr 



Eut hernia, L 



Begon 



Blastemanthus , 



L uxembergia , 

 (Ochnaceae), Stemonojionts, Mono- 

 (Dipterocarpaceae), Kiggelaria (Flacourtiaceae), 



Solanthera and Parvibegonia (Begonia- 



ceac), Ardisia, sections Icacorea, Stylogyne, and Monop 

 rus (Myrsinaceae), Gai 

 Cotylanthera ( Gentianaceae ) , Sola 



(Loganiaceae), Exacum 



mm, Cyphomandn 

 (Solanaceae), Argoslemma, and Strumpfia (Rubiaceae) 



Mayacaceae. 



In the Mayacaceae, with the single genus Mayaca, 



we 



