PERKINS THE LEGUMINQSAE OF PORTO RICO. 1 v -*'> 



Trinidad Grisebach . Found in many parts of tropical America, also introduced in 

 the < Mil World. Frequenl a- a weed on cultivated land. 



The large spurred Btipules of I na are used as a dwelling place by ants. By 



the form of the stipules il can easily be distinguished from . I. s< nsitiva. The half-round 

 joints of the pod, rectilinear on the superior, rounded on the inferior margin, are also 

 striking. 



Local name, io. 



Li. Aeschynomene americana villosa Poir. Urb. 



Urban, 288. 



Flowers orange-colored. 



Near Aibonito, at Algarrobo; near Cayey al 330 meters altitude; nearGuanic 

 gravelly hank- at Barina; near Maricao in pastures; near Mayaguez around the fortress; 

 near Rincon, in rocky place- a1 Barrio del Pueblo; near Aguada, on plains al Piedra 

 Blanca.— Cuba, Martinique. 



1. Aeschynomene portoricensis Urb. 

 Urban, 288. 



Perennial or undershrub; Btipules ovate or lanceolate, L.5 to 2.5 nun. long; leaflets 

 obovate or oval, rounded al the top, Bubcordate at the base, 5 to s nun. long; inflo- 

 rescence li> to 15 nun. long, axillary, simple, 1 or 2-flowered; flowers yellow, 5 nun. 

 long; pedicel 3 to 5 nun. long; calyx 2.5 nun. long; petals subequal; pod 4 to 5 mm. 

 loim. stipitate, the articulations 2 to 1 ; seeds Bubtriangular-ovate, olive-green, Bmooth, 

 shiny. 



Near Maricao; near Manati, in the .-and on the Bhore of Lake Tortuguero. 

 Indigenous. 



This is the only one of the Porto Pico Aeschynomenes thai has A or 5-jugate Leaflets. 



40. STYLOSANTHES Sw. 



Stylosanthes Sw. Prod. Veg. End. Occ. 108. 1788. 



Calyx with an elongated Aliform tube and Bcarious lobes, the four upper ones 

 connate, the lowest distinct, elongate; petals and stamens inserted at the throat of 

 the tube; standard orbicular or suborbicular, emarginate; wings oblong, free; keel 

 incurved, subrostrate; stamens all connate, in a closed tube, the anthers alternately 

 longer and fixed near the base and shorter and versatile; ovary nearly se<-ile at the 

 base of the tube, 2 or 3-ovulate; Btyle long, filiform, after flowering broken at the 

 middle or near the base, the portion that remains becoming decurved; stigma 

 minute ami terminal: pod Bubsessile, compressed, crowned with the persistent 

 curved base of the Btyle, the articulations usually two. sometimes solitary, i 

 reticulated. Pilose, often hirsute-setose, sometimes viscous herbs or underehrubs; 

 leaves pinnate; leaflets :;. Lanceolate to linear: Btipules adnate to the petiole except 

 the long, free, subulate apices; flowers yellow, axillary or terminal, in dense spikes 

 or heads. 



1. Stylosanthes hamata 1.. Tanl>." 



(Urban, 288 



Stems procumbent or diffuse, from a few centimeter- to 1 meter high; leaflets 

 oblong or oblong-lanceolate, 7 to 17 mm. long, 2 to 6 mm. wide, pointed, glabreecent; 

 flowers yellow, in bracteate spikes !•"> mm. long, single or with an a 9triate 



oCook and Collins, p. 245, as Stylosanthes procumbens. 



