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PEKKTNS^ — T-liE LErxUMi:NOSAE OE POETO RICO. 



183 



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Trinidad (CTrisebach). Found in many parts of tropical Americaj also introduced in 

 the Old World. Frequent as a weed on cultivated land. 



The large f^purred .^tipules of .1. amcricana are nsed as a dwelUnij: place by ants. By 

 the form of the stip\ites it can ea.sily be di.stingui.shed from A. sensitiva. The half-rtmnd 



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

 striking. 



Local name. [/( rhd rosnrio. 



3. Aeschynomene americana villosa (Poir.) T'rl). 



Flowers orange-colored. 



(Urban, 288.) 



Near Aibonito, at Algarrobo; near (\iyey at 330 meters altitude; nearGnanica, on 

 gravelly })anks at Jiarina; near Maricao in pastures; near Mayaguez around the fortress; 

 near Rincon, in rocky places at Barrio del Pueblo; near Aguada, oji plains at Piedra 

 Blanca.^Ouba, ^hirtinicpie. 



4. Aeschynomene portoricensis Ilrb. 



(Urban, 288.) 



Perennial or nndershruh; stipules ovate or lanceolate, 1.5 to 2.5 mm. long; leafletR 

 obovatc or oval, rouiuh'd at the top, aubcordate at the base, 5 to 8 mm. long; ii^flo- 

 rescence 10 to 15 mm. long, axillary, simple, 1 or 2-flowerod; flowers yellow, 5 nun. 

 loTig: pedicel :] to 5 mm. long; calyx 2.5 mm. long; petals subequal; pod 1 to 5 mm. 



long, Ptipitate, the articulations 2 to 4; seeds subtriangular-ovate. olive-green, smooth, 

 shmy. 



Near ^Maricao; near ^Manati, in the sand on the shore of Lak(j Tortugucro. 

 Indigenous. 



This is the only one of the Porto Rico Aeschynomenes that has 4 or o-jugatc leaflets. 



40. STYLOSANTHES Sw. 



Stylosanihcs Sw, Prod. Veg. Ind. Occ. 108. 1788. 



Calyx with an ehmgated filifcn-m tube and scarious 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, subrostrato; stamens all connate, in a closed tube, the anthers alt(^rnat(^ly 

 longer and fixed neai* the base and shorter and A'ersatile; ovary nearly s(*ssil(^ at the 

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

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

 miHTite and terminal; pod subses^ile, compressed, crowned with the persistent 

 curv^ed base of the style, the articulaticms usually two, sometimes solitary, rugose- 

 reticulated.— Pilnsp, often hirsute-setose, sometimes viscous herbs or ujidcrshrubs; 

 leaves pinnate; leaflets 3, lanceolate to linear; stipules adnato to the petioh^ except 

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

 or heads, 



1. Stylosanthes hamata (L.) Taub.« 



(Url^an, 288.) 



Stems procumbent or diffuse, from a few centimet(*rs to 1 meter high; leaflets 

 obloTig or oblong-lanceolate, 7 to 17 mm. long, 2 to G mm. wide, pointed, glal)rescent; 

 flowers yellow, in bracteate spikes 15 mm. long, single or with an accessory striate 



'iCook and Collins, p. 245, as Slylosanthrs prociimhcns. 



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