222 A FLORA OF MANILA 



3. Filaments more or less connate. 



4. Pods indehiscent, septate between the seeds li Enterolobium 



4. Pods dehiscent or indehiscent, not septate between the seeds. 



5. Pods strongly spirally twisted 2. Pitheeolobium 



5. Pods straight, thin :. 3. Albizzia 



3. Filaments free 4. Acacia 



2. stamens as many, or twice as many, as the petals. 

 3. Anthers not gland*tipped. 



4. An erect shrub or small tree; pods straight, flat, smooth. 



5. Leucaena 

 4. A suifrutescent, spreading, spiny herb with very sensitive leaves. 



6. Mimosa 

 3. Anthers gland-tipped. 



4. Pods indehiscent-; shrubs or small trees armed with long spines. 



7. Prosopie 



4. Pods dehiscent; unarmed trees 8. Adenanthera 



1. Calyx-lobes imbricate ; large unarmed trees with bipinnate leaves and 

 very numerous small leaflets, the flowers very numerous, in dense 

 obovoid heads ► 9. Parkia 



B. Caesalpinioideae 



1. Calyx entire , or the segments above the receptacle more or less united 

 into a toothed or lobed tube. 



2. Leaves 2-pinnate; spiny climbing shrubs. 10. Mezoneurum 



2. Leaves simple, 2-cleft or lobed; unarmed shrubs, vines, or trees. 



11. Bauhinia 

 1. Calyx-segments free or nearly free above the receptacle. 

 2. Leaves 2-pinnate. 

 3. Calyx-segments valvate; large trees with very showy red and yellow 



flowers and numerous small leaflets 12. DeUmix 



3. Calyx-segmeiits imbricate. 



4. Pods not winged; erect, slightly spiny shrubs 13. Caesalpinia 



4. Pods winged on one or both sutures. 



5. Climbing, very spiny shrubs; pods winged along one suture. 



10. Mezoneurum 

 5.. Erect, unarmed trees with large panicles of showy yellow 



flowers; pods winged along both sutures 14. Peltophorum 



2. Leaves 1-pinnate or reduced to single leaflets. 

 3. Anthers basified, opening by terminal pores; herbs, shrubs, or trees. 



15. Cassia 

 3. Anthers versatile, opening by longitudinal slits. 



4. Ovary or its stipe more or less adherent to the calyx-tube. 



5. Petals 3; pods fleshy 16. Tamariiidus 



5. Petal 1. 



6. Perfect stamens 3*; seeds not arillate 17. Intsia 



6. Perfect stamens usually 7; seeds arillate 18. Pahvdia 



4. Ovary quite free from calyx; ovules 1 or 2. rarely 3; petals 5. 



19. Cynometra 

 C. Papilionatae 



1. Fruit composed of 1-seeded joiBts which are usually i ndehiscent. 

 2. Leaves pinnate. " 



