214 



Plants a?id their Ways in South Africa 



F. Stamens in several sets, opposite 

 the petals ; anthers 2-celled ; pla- 

 centation parietal or axile. 

 Calyx imbricate ; leaves opposite, 

 exstipulate ; oil glands present 

 Calyx valvate ; leaves alternate, 

 stipulate ; oil glands absent 

 FF. Stamens monadelphous ; leaves al- 

 ternate stipulate ; placentation 

 axile. 

 Anthers i-celled .... 

 Anthers 2-celled .... 

 BB. Perianth and stamens slightly perigynous ; 

 receptacle usually hollow or tubular. 

 C. Carpels apocarpous. (Cohort Rosales.) 

 D. Seeds endospermous ; leaves ex-stipu- 

 late except Comiaracece, opposite or 

 alternate. 

 Carpels isocarpic ; stamens iso- or 

 diplo-stemonous, fleshy plants . 

 DD. Seeds ex-endospermous ; leaves mostly 

 stipulate; usually alternate. 

 E. Stamens many ; flowers regular. 

 Fruit a pome, drupe, or achene 

 Fruit a legume .... 



EE. Stamens few. 



Carpels 5, fruit a follicle; stamens 



5-10; stipules absent . 

 Fruit a legume or loment ; stamens 

 10; stipules present 

 CC. Carpels syncarpous. 



D. Placentation axile. (Cohort Rosales 

 excluding Elatinaceae.) 

 E. Fruit a many-seeded capsule (few 

 seeded Cnnonia, Saxifragacece). 

 F. Plants in swift streams, forming a 



thallus 



FF. Trees or shrubs ; capsules 2-5 

 celled. 

 Styles separate ; leaves simple, ex- 

 stipulate, or compound, stipu- 

 late, alternate, or opposite . 

 Styles united; leaves simple, stipu- 

 late opposite .... 

 Styles united ; leaves alternate, 

 simple, exstipulate, shrubs with 

 conspicuous flowers . 



GUTTIFER^. 

 TiLIACEiE. 



Malvace^. 

 Sterculiace^. 



CRASSULACEiE. 



Rosacea. 

 Leguminos^. 



Connarace^. 

 Leguminos^. 



Podostemace^. 



Saxifragace^e. 

 Elatinace^. 



PlTTOSPORACE^. 



