PEBKINS — THE LEGUMINOSAE OF PORTO BICO. 



13J 



Legume flat, thin, Lndehiscent, or 



dehiscenl with valvee thai are qoI 



contorted. 



Legume straighl or Blightly curved; 



vah es Beparal Lng elasl Lcally longi- 



1 udinally Erom apex to base. 



Stamens Eree, the inner ones sometimes 



united, forming a very shorl ring; carpel 



always 1. A.CACTEAE.) 



Stamens as many as or) twice as many as petals. 

 Anthers eglandular. (Ei memos e a e.) 



Valves of the legume separating Erom the 

 persistent sutural replum. 

 Legume flatly compressed. 

 Legume Bubquadrangular. 

 Valves of the legume adhering to the 

 sutural replum. 



Legume narrowly linear; seeds longi- 

 tudinal or oblique. 

 Legume broadly linear; Beeds trans- 

 verse. 

 Anthers in the bud bearing a sessile or more 

 efi en stipitate gland, which usually has 

 disappeared at the time of flowering. 

 Seeds with endosperm. (Adenanthe- 



REAK. ) 



Flowers capitate. 

 Flowers spicate or racemose. 

 Seeds without endosperm. (Piptade- 



XIEAE.) 



Flowers in globose heads (in the 

 Porto Rican species) or in spikes; 

 legume flat. 2-valved, valves con- 

 tinuous, entire. 

 Flowers in spikes; legume straighl 

 or arcuate, sometimes of enornn >us 

 size, woody, coriaceous, or papery . 

 sutures mere or less thickened, 

 persisting after the separation of 

 the 1-seeded articulations as a re- 

 plum. 

 Flowers zygomorphic, doI papilionaceous; petals im- 

 bricate in tin' bud. the posterior one included in 

 estivation. 



Leaves abruptly pinnate; calyx lobes free to the 

 disk; petals 0, I. or 5; ovules 1 to -1. (Cynome- 

 ti:i: \l. 



Leaves without black glandular dots: petals 

 on the outside levigate; stamens usually 

 glabrous. 

 Leaves on the under surface with black 

 glands; petals on the outside verrucose; 

 Btamens lanate-pilose. 



3. AUrizzia p 



4. ( 'alHandra \>. 1 13 I. 

 ~> Acacia l p. Ill 



B. Mimosa p. L47 , 

 7 Schrankia p. 146 - 



9. Desmanthus p. 1 18 . 

 6. Leucaena < p. 146 



10. Neptunia (p. 148b 



1 1 . Ad\ nanihi ra p. 149i. 



12. Piptadenia (p. 150). 



L3. Entada (p. 150 , 



Caesalpinioide u:. 



11. ( Sjnarru fro p. 151 ). 

 15. Stahlia p. L51 



