PERKINS THE LEGUMINOSAE OF PORTO RICO. 151 



Near Fajardo, on the river al the base of Mount Mula; between Manati and Vega 

 Baja, in sandy districts. South America, and in related forms in Guadeloupe, Marti- 

 nique, and St. Vincent. 



Local name, tamarindillo. 



14. CYNOMETRA L. 



Cynometra L. Sp. PI. 1: 382. 1753. 

 Iripa Adans. Fam. 2: 508. 1763. 

 Cynomora R. Hedwig, Gen. 304. 1806. 

 Metrocynia Thou. Gen. Nov. Madag. 22. 1806. 



Calyx with a rather short or very short receptacle; segments 4 or 5, thin, imbricate 

 in estivation, usually reflexed at flowering; petals 5, subequal, sometimes one or 

 two anterior minute, not verrucose'; stamens 10, rarely indelinite, free; filaments gla- 

 brous; ovary sessile or shortly stipitate, cohering with or free in the receptacle; style 

 filiform; stigma small, truncate or rounded; legume obliquely ovoid, obovoid, or reni- 

 form, rarely straight, coriaceous, turgid or slightly compressed, rugose, verrucose, 

 rarely levigate, 2-valved; seeds exalbuminous. Unarmed trees or shrubs; leaves 

 paripinnate; leaflets 1 to 6 jugate, oblique, coriaceous; flowers usually reddish, small, 

 in axillary or lateral clusters or short racemes; bracts ovoid, membranous, at first 

 imbricate, later deciduous, rarely persistent; bracteoles wanting or, when present, 

 membranous and colored. 



1. Cynometra portoricensis Krug & Urb. 



(Urban, 270.) 



Tree, 15 meters high; stipules wanting; leaflets 1-jugate, oblique, obovate-oblong, 

 1.5 to 3 cm. long, 0.6 to 1.2 cm. wide, entire, coriaceous, glabrous, shining; inflores- 

 cence axillary, rachis 5 mm. long; legume semiorbicular, 2.5 to 3 cm. long, 1.4 to 1.8 

 cm. wide, crustaceous, sublevigate, brown. 



Near Rincon, on wooded hills at Quebrada del Salto. Indigenous. 



15. STAHLIA Bello. 

 Stahlia Bello, Anal. Soc. Esp. Hist, Nat. 10 2 : 255. 1881. 



Calyx with obconical receptacle and 5 free, subequal, obtuse segments; petals 5, 

 subequal, dorsally multiverrucose; stamens 10, free, filaments lanate; ovary sessile, 

 free at the fundus of the receptacle; style filiform; stigma small, truncate; legume 

 roundly ovoid, somewhat compressed, coriaceous, indehiscent (according to Bello 

 very late dehiscent); seeds 2, exalbuminous; bracts membranous, not imbricate, 

 caducous; bracteoles wanting. Unarmed trees; leaves paripinnate; leaflets pauciju- 

 gate, oblique, thin, the lower surface glandular; flowers light yellow, not large, in 

 axillary or terminal racemes. 



This is the only endemic genus of Leguminosae in Porto Rico. 



1. Stahlia monosperma (Tul.) Urb. 

 (Urban, 270.) 



Handsome tree 5 to 20 meters high; leaves 24 to 30 cm. long; leaflets 4 to 6-jugate, 

 ovate-oblong, 6 to 9 cm. long, 2 to 4 cm. wide, with subcordate or truncate base; 

 inflorescence 10 to 20-flowered, often 10 cm. long; sepals 6 to 7 mm. long, 4 to 5 mm. 

 wide; petals pale yellow, 10 to 11 mm. long, 5.5 to 6 mm. wide; anthers purple; 

 legume 3.5 to 4.5 cm. long, 2.5 to 3 cm. wide, glabrous, red when mature. 



Flowering from March to May, fruiting in August and September. 



