Vlil. KEY TO NATURAL OBDEES. 



* * Pistils 3 — 5, variously united. 



Pistils more or less united around a central 

 axis; carpels becoming 1-seeded 



and distinct in maturity Geba.niace.2E 70 



Central axis not apparent. 



Carpels partly partitioned, each 2-seeded, 



, the whole fruit capsular Lines! 67 



Carpels simple, winged, 1-seeded. 



Samara 1, with 2 seeds Rutaoesj 72 



Samaras 2, each 1-seeded Sapindaoe.2E 72 



* * * Pistil one only; styles rarely 2 or 3. 

 -t— Anthers opening by uplifted valves. 



Stamens 9, in 2 series; leaves aromatic Laurine« 8 



Stamens 6 or 9, in 1 series; not aromatic Berbebidesj 7 



■i— +- Anthers opening by terminal pores. 



Stamens 10; stigma broad Ericaceae 231 



•)— H— +- Anthers opening by lateral slits. 



Flowers papilionaceous; fruit a legume Leguminoseje 83 



Flowers resembling the papilionaceous, but 



petals 3 only; pod 2-celled Polygale.2g 81 



Flowers regular; calyx and corolla both 

 present. 

 Petals 5, unguiculate, the limb cucullate . . . Rhamne.2e 74 



Petals, stamens and capsule-valves 4 or 



5; seeds covered by a red aril CELASTRiNEa; 74 



Flowers 5-merous; fruit a single small 



drupe ANACABDIACE.3E 73 



Petals 4 or 5; stamens 5—8; capsule 3- 

 celled, by abortion 1-seeded, 



Hippocastanum in Sapindace2e 73 



Petals 4 or'5, united at apex; calyx minute . . Sarmentos.2E 78 



Calyx tubular; petals long-clawed. 



Placentae parietal ,Fbankeniace.e 38 



Placenta central Caryophylle.e 30 



Sepals and petals 4 each; stamens 6, 



tetradynamous Cbucifer.«j 13 



Petals 5, deciduous; sepals 2, persistent; 



capsule 3-valved, 1-celled VortvtjAcem 58 



Petals and sepals 4 or 5 each, the latter per- 

 sistent; capsule 1-celled, 4 — 10- 

 valved or -toothed; placenta cen- 

 tral Cabyophylle* 30 



