

[Vol. 2 



132 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



flowers apetalous, diclinous (monoecious or dioecious) ; ovary 

 1-celled, 1-ovuled. Morus, Toxylon (Madura), Broussonetia, 

 Dorstenia, Artocarpus, Castilloa, Antiaris, Ficus, Humulus, 

 Cannabis. (Pf. 3 1 : 66.) 



Family 81. Urticaceae. Nettles. Herbs, shrubs, and trees 

 with alternate or opposite leaves; flowers mostly diclinous, 

 apetalous; stamens few, 2-celled; pistil monocarpellary, 1- 

 celled, mostly 1-seeded; endosperm none. Urtica, Boehmeria. 



Order Sarraceniales. Pistil of 3-5 carpels united; 

 centae parietal or central ; seeds small, numerous, endosperm- 

 ous; herbs with "insectivorous" leaves; related to tho mal- 

 lows, with which they should possibly be included. (Species 

 about 66.) 



Family 82. Sarraceniaceae. Pitcher-plants. Herbs with 



pitcher-shaped leaves, and perfect flowers ; sepals 4-5 ; petals 

 5, rarely 0; stamens indefinite; pistil 3-5-carpellary. Sarra- 

 cenia, Darlingtonia. (Pf. 3 2 : 244.) 



Family 83. Nepenthaceae. Pitcher-plants. Tropical un- 

 dershrubs with pitcher-shaped leaves and dioecious flowers; 

 sepals 4 or 3; petals 0; stamens 4-16; pistil 4-3-carpellary. 

 Nepenthes. (Pf. 3 2 :253.) 



Order Geraniales. Pistil of several (5-2) mostly weakly 

 united carpels; ovules 1-2 (or many), mostly pendulous, at- 

 tached at the inner angle of the carpel. (Species about !>268.) 



Family 84. Geraniaceae. Geraniums. Herbs, shrubs, and 

 trees, with opposite or alternate (compound or simple) leaves; 

 torus elongated ; stamens 10 ; pistil mostly 5-celled ; ovules few ; 

 endosperm sparse or 0. Geranium, Pelargonium, Erodium. 

 (Pf. 3 4 :1.) 



Family 85. Oxalidaceae. Sorrels. Herbs, rarely shrubs 

 or trees, the juice sour ; leaves mostly 3 or more foliate ; flowers 

 pentamerous, regular; stamens 10; ovules many; endosperm 

 fleshy. Oxalis. (Pf. 3 4 :15.) 



Family 86. Tropaeolaceae. Nasturtiums. Succulenl, 

 prostrate or climbing herbs, with alternate, peltate leaves, and 



