[Vol. 2 



158 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



duced to bracts ; flowers perfect or diclinous ; petals ; pistil 

 1-celled, inferior; ovule 1, erect; endosperm fleshy. Loranthus, 

 Viscum, Phoradendron, Razoumowskia. (Pf. 3 1 :156.) 



Family 259. Balanophoraceae. Parasitic, leafless herbs, 

 all tropical, with much reduced, apetalous, monoecious or 

 dioecious flowers; pistil 1-celled, inferior; ovule 1, pendulous; 

 endosperm fleshy. Balanophora. (Pf. 3 1 :243.) 



Order Sapindales. Flowers mostly actinomorphic, perfect, 

 or diclinous; pistil 1 to several-celled, superior to inferior; 

 ovules 1-2, erect, ascending, or pendulous ; endosperm mostly 

 0. (Species about 2903.) 



The Sapindales lie wholly in a phyletic side-line, and the 

 order has been developed from some part of the intermediate 

 order Celastrales, which constitutes a transition from the 

 lower hypogynous cup flowers to those in which epigyny is 

 fixed. In the lower Sapindales hypogyny still persists, but 

 in the higher families this gives way to complete epigyny. 



Family 260. Sapindaceae. Soapberries. Trees and shrubs, 

 mostly tropical, with alternate (or opposite), mostly com- 

 pound leaves and mostly perfect, irregular flowers; disk pres- 



ent or 0; petals 3-5 or 0; pistil 1-3-celled; ovules 1 or 



ascending ; endosperm usually 0. Paullinia, Sapindus, Talisia, 

 Litchi, K o elr eut eria , Dodonaea. (Pf. 3 5 : 277.) 



Family 261. Hippocastanaceae. Horsechestnuts. Trees 

 and shrubs, with opposite, palmately compound leaves ; flowers 

 mostly regular; sepals 5; petals 4-5; stamens 8-5; pistil su- 

 perior, tricarpellary ; endosperm 0. Aesculus. (Pf. 3 8 : 273.) 



Family 262. Aceraceae. Maples. Trees and shrubs, with 



opposite, simple or compound leaves and small, regular flow- 

 ers ; sepals 4-10 ; petals as many or none ; pistil superior, bi- 

 carpellary, winged in fruit; endosperm 0. Acer. (Pf. 3 5 : 258.) 



Family 263. Sabiaceae. Trees and shrubs of the tropics, 

 with alternate, simple or compound leaves, and perfect or 

 diclinous flowers ; petals 4-5 ; pistil 2-3-celled ; ovules 1 or 2, 

 horizontal or pendulous; endosperm 0. Sabia, Meliosma. 

 (Pf. 3 5 :367.) 



