154 



Materials for a Flora of the Malayan Peninsula. 



Trees shrubs or stout herbs with large leaflets and 

 ■with obtuse sepals : — 



Stamens 10, all fertile : — 



Lowest 2-3 stamens larger than the rest, pods 

 terete indehiscent ($ Fistula) :■—' 



Flowers pink, in dense corymbs, bracts large 

 persistent : — 



Leaflets acute, corymbs from old nodes below 

 leaves, sepals green, petals acute ... 

 Leaflets obtuse, corymbs among leaves, sepals 

 brown to purple, petals obtuse 

 Flowers yellow, in lax racemes, bracts small 

 deciduous 

 Lowest stamens not exceeding the rest, pods flat, 

 dehiscent (§ Fsilorhegma) ... 

 Stamens 7 only fertile ; the 3 upper reduced to sta- 

 minodes f§ Senna); pods dehiscent, usually more or 

 less compressed) : — 



Leaves with glands on the common rachis : — 

 Glands between the bases of two opposed lea- 

 flets; leaflets obtuse, pods with oblique dissepi- 

 ments ; seeds rhombohedral : — 



Glands between each of the two lower pairs of 

 leaflets; pedicels short, pods subquadrate 

 Gland between lowest pair of leaflets only ; 

 pedicels long, pods subterete 

 Glands far below leaflets and near base of petiole ; 

 leaflets acute, pods with ti'ansverse dissepiments ; 

 seeds ovate, compi-essed : — 



Calyx, leaves and pods densely tomentose ; 

 flowers in subsessile axillary pairs 

 Calyx, leaves and pods glabrous ; flowers in 

 axillary corymbs : — 



Leaflets 3-5 pairs ; pods flattened 

 Leaflets 8-12 pairs; pods turgid 

 Leaves with rachis channelled above, barred trans- 

 versely between the leaflets but without glands : — 

 Shrubs with flowers in strobilate subspicate ra- 

 cemes ; pods winged along the valves ; leaflets 

 reaching 6 in. 



Trees with flowers in panicles of corymbs ; pods 



not winged ; leaflets not exceeding 25 in. : — 



Stipules large persistent; pod thin-valved 



flexible, with narrow sutures 



Stipules small deciduous ; pod with coriaceous 



rigid valves, sutures thickened 



Slender herbs or undershrubs with very small leaflets 



and with acute sepals (§ Chnimeci-ista) : — 



Lofiflets linear minute ('15 iu. long) ; pedicels 1 in. 

 154, 



1. 



2. 



4. 



5. 



6. 



11. 



12. 



0. nodosa. 

 C. jnvanica. 

 G. Fistula. 

 C. glauca. 



C. Tora. 



C. ohtusifolia. 



10. G. alata. 



G. fimoriensis. 

 G. siamea. 



