Ccesalpiniece] XLV. LEGUMINOS^ 245 



Second Scb-Order, C^SALPINIE^. 



Trees, shrubs, climbers, rarely herbs. L. pinnate, pari-bipimiate, rarely 

 unifoliolate. Fl. bisexual, often zygomorphic. Calyx of 5 more or less connate 

 sepals, often lined in their lower portion by a disk, which bears petals and 

 stamens. Petals 5 or less, imbricate in bud, the posterior (upper) petal inside. 

 Stamens 10 or fewer, rarely numerous, free or more or less connate. Seeds 

 with or without albumen, radicle straight. 



Most trees of this Sub-Order have a distinct dark-coloured heart wood, the chief 

 exception being the arboi'oscent Baukinias. Some genera (Bardtcickia, Copaifera, 

 Trachylobium and Hymenaza) have cavities in the wood tilled with gum-resin, the walls 

 lined by a stratum of thin walled secreting cells. The climbing JBauhinias have an 

 anomalous si rucl ore. 



A. L. bipinnate. 



I. Calyx 5-cleft to hasp or nearly so. segments imbricate, stamens 10. 



Pod not winged 1. CsSALFIKIA. 



Pod winged On both sutures . . . .2. Peltophorcm. 

 Pod winged on one suture only . . . .3. Mezoxeukum. 



Pod with a largo terminal wing, 1-seeded, 



indehiscent 4. Pterolobidm. 



II. Calyx 5-cleft to base, segments narrow, valvate or slightly overlapping. 

 Common petiole long: petals orbicular, nearly 



equal; pod flat 5. Poinciana. 



Conin .■-.! I ■ ' ;. il<- long: petals very unequal; 



i I urgid Colvilu \ p. 249 - 



Common petiole short, leaflets sinuate; pod 



turgid . Pakkinsonia (p. 249). 



III. Calyx campanulate. Fl. in dense spikes. 



A prickly climber. Stamens 10. . . . <i. Wagatea. 

 irge tree. Stamens 5 7. Axrocahpus. 



B. I. pinnate, usually paripinnate. 



I. Petals Mono. 



Perfecl stamens 10 ...... 8. Hardwickta. 



Perfect stamens 2-8, long exserted. Leaflets 



opposite 9. S abac a. 



Perfect stamens 2. Leaflets alternate . . Dialiusi p. 251). 



II. Petal I. 



Stamens 3-8. L. papery. Pod flat, subinde- 



biscenl 10. Ai zii w. 



Stamens 7. L. papery. Pod dehiscent, valves 



woody . . . . . . . .11. Pahcdia. 



Stamens 10. L. coria is. Pod dehiscent, 



valves thick coriaceous, echinate . . . Sindora p. 252). 



III. Petals 8 or 5, nearly equal. Perfecl sto as 5 . 12. Hcsiboldtia. 



I \'. Petals 8, u |ual. 



Stamens L0 ........ A.mhkbstia (p. 252). 



S mens :'• IS. T luabimdi -. 



V. Petals 5. 



Si imens uneqi pari l,\ imperfect . .11. Cassi v. 



Stamens perfect, equal, usually 10 . . 16. Cynouktra. 



C Leaflets 2, as a rule com 16. Bai uiki \. 



i. C^SALPINIA, Linn.; Fl. Brit. [nd. ii. 254, 



Trees, shrubs or woody priokly (limbers. Fl. white, yellow or rod. Calyx 

 lobes 5, imbricate, the lowest outside and oft on larger. Totals .">. aearly equal, 

 Stamens L0,free; anthers uniform, dehiscing longitudinally. Pod compressed. 

 coriao 



